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Chemical reaction in which a carbon-halogen bond is cleaved
In organic chemistry, dehalogenation is a set of chemical reactions that involve the cleavage of carbon-halogen bonds; as such, it is the inverse reaction
Dehalogenation
Branch of photochemistry
reaction additives. Like tin-mediated radical dehalogenation reactions, photocatalytic reductive dehalogenation can be used to initiate cascade cyclizations
Photoredox_catalysis
Chemical reaction which adds one or more halogen elements to a compound
disulfur dichloride. Wikiquote has quotations related to Halogenation. Dehalogenation Haloalkane (Alkyl halide) Halogenoarene (Aryl halide) Free radical halogenation
Halogenation
Chemical compound with formula AgC2H3O2
Silver acetate is a coordination compound with the empirical formula CH3CO2Ag (or AgC2H3O2). A photosensitive, white, crystalline solid, it is a useful
Silver_acetate
Disinfectant and antiseptic
4-chloro-3-methylphenyl acetate product. Dehalogenation of p-chlorocresol to remove the chlorine atom. Biological dehalogenation can be used to remove halogens
P-Chlorocresol
Uranium Ferric Hydroxide, Sulfide, Pyrite, Reduced Chromium, Uraninite Reductive Dehalogenation Halogen compound with electron donor Reduced contaminant
Bioremediation_of_oil_spills
Chemical compound
Schnöckel and coworkers later showed an alternative synthesis involving the dehalogenation of hexachlorophosphazene with molten silver, with concomitant loss of
Phosphorus_mononitride
Chemical compound
A.; Arnold R. G.; Kuhler R. J.; Santo G. A. (June 2005). "Reductive dehalogenation of bromoform in aqueous solution". Environ. Health Perspect. 103 (Suppl
Bromoform
Chemical reaction which breaks carbon-chlorine bonds via a reductant
15227/orgsyn.068.0032. Mohn, WW; Tiedje, JM (1992). "Microbial reductive dehalogenation". Microbiol Rev. 56 (3): 482–507. doi:10.1128/mmbr.56.3.482-507.1992
Reductive_dechlorination
Protein-coding gene in the species Homo sapiens
Dehalogenation in aerobic organisms is usually done through oxidation and hydrolysis; however, iodotyrosine deiodinase uses reductive dehalogenation.
Iodotyrosine_deiodinase
Vitamin used in animal cell metabolism
"Reductive dehalogenase structure suggests a mechanism for B12-dependent dehalogenation". Nature. 517 (7535): 513–516. Bibcode:2015Natur.517..513P. doi:10.1038/nature13901
Vitamin_B12
Genus of bacteria
obtain energy via the oxidation of hydrogen and subsequent reductive dehalogenation of halogenated organic compounds in a mode of anaerobic respiration
Dehalococcoides
Catalyst composed of nickel and boron
Nickel boride is the common name of materials composed chiefly of the elements nickel and boron that are widely used as catalysts in organic chemistry
Nickel_boride_catalyst
In organic chemistry, α-halo ketones can be reduced with loss of the halogen atom to form enolates. The α-halo ketones are readily prepared from ketones
Reductive dehalogenation of halo ketones
Reductive_dehalogenation_of_halo_ketones
Nanoparticle catalysts
generated rhodium nanoparticles. These nanoparticles catalyzed the dehalogenation of aromatic compounds as well as the hydrogenation of benzene to cyclohexane
Nanomaterial-based_catalyst
Organic compounds of the form >C=O
carboxylic anhydride. Ketones can be prepared from haloketones in reductive dehalogenation of halo ketones. In ketonic decarboxylation symmetrical ketones are
Ketone
Drugs used to achieve relief from pain
= 2–4 hours; hepatically metabolised via oxidation, hydroxylation, dehalogenation and conjugation with glucuronic acid; excretion = urine, faeces (20–30%)
Analgesic
6-sided ring composed of pure carbon
peer-reviewed scientific work. Another synthesis was reported in 2025 by the dehalogenation of hexaiodobenzene on a sodium chloride layer on an Au(111) surface
Cyclo(6)carbon
Form of vitamin B-12
cyclohexylcobalamin. This reaction is under review for use as a catalyst for chemical dehalogenation, organic reagent and photosensitized catalyst systems. Cyanocobalamin
Cyanocobalamin
Chemical compound
elimination reaction with Burgess reagent oxidation with p-chloranil dehalogenation with polymethylhydrosiloxane, palladium(II) acetate, potassium phosphate
Azulene
Chemical compound
reacts with NiCl2 to form a very effective catalyst for the reductive dehalogenation of aryl halides. The valence electron configuration of Yb+3 (from YbCl3)
Ytterbium(III)_chloride
Class of chemical compounds
trimethylenemethane complexes are synthesized in the following four ways: (A) the dehalogenation of α, α'-dihalosubstituted precursors, (B) the thermal extrusion of
Trimethylenemethane_complexes
Organic compound containing at least one covalent carbon-bromine bond
Like other halogenated pesticides, bromoxynil is subject to reductive dehalogenation under anaerobic conditions, and can be debrominated by organisms originally
Organobromine_chemistry
New Zealand chemist
the enzyme reductive dehalogenase is responsible for the biological dehalogenation in organohalide respiring bacteria. However, some of these enzymes are
Sam_Hay_(chemist)
Organic compound (CH2)4
give cyclobutanones. 1,4-Dihalobutanes convert to cyclobutanes upon dehalogenation with reducing metals. Cyclobutane was first synthesized in 1907 by James
Cyclobutane
and only degraded via reductive dehalogenation to be used as a growth-substrate by organisms. Reductive dehalogenation often results in the partial dechlorination
Cometabolism
Organic compound with a –C(=O)Cl group
formed as a byproduct. The alcoholysis of acyl halides (the alkoxy-dehalogenation) is believed to proceed via an SN2 mechanism (Scheme 10). However,
Acyl_chloride
Organic reaction between amine and alkyl halide
Amine alkylation (amino-dehalogenation) is a type of organic reaction between an alkyl halide and ammonia or an amine. The reaction is called nucleophilic
Amine_alkylation
Chemical compound
5-dibromo-4-hydroxybenzoic acid) have been shown to undergo metabolic reductive dehalogenation by the microorganism Desulfitobacterium chlororespirans. Bromoxynil
Bromoxynil
Organic compound with the formula H2C=C=O
difficult to control; dichloroketene is typically used instead, followed by dehalogenation with zinc-copper couple. Exposure to concentrated levels causes irritation
Ethenone
Robles-Osorio, L; Valverde-R, C (January 2011). "Inhibition of intrathyroidal dehalogenation by iodide". The Journal of Endocrinology. 208 (1): 89–96. doi:10.1677/JOE-10-0300
Plummer_effect
Heterocyclic aromatic organic compound
example in Knoevenagel condensations. It is especially suitable for the dehalogenation, where it acts as the base for the elimination reaction. In esterifications
Pyridine
Genus of anaerobic bacteria found in soil
genome sequences provided insights into the evolution of reductive dehalogenation and differing strategies for niche adaptation. Geobacter species are
Geobacter
respiring bacteria by reducing organohalides. During such reductive dehalogenation reaction, organohalides are used as terminal electron acceptors. They
Reductive_dehalogenases
Class of chemical compounds
adsorb tightly to soil particles, and microbial degradation (mostly via dehalogenation, Dehalococcoides CBDB1 being an example) of dioxins is very slow, researchers
Dioxins and dioxin-like compounds
Dioxins_and_dioxin-like_compounds
Chemical compound
through photolysis. The main biodegradative pathway for PCP is reductive dehalogenation. In this process, the compound PCP is broken down to tetrachlorophenols
Pentachlorophenol
Class of enzymes
2-monochloropropionate dehalogenation by the two dehalogenases of Pseudomonas putida PP3: evidence for two different dehalogenation mechanisms". Journal
2-haloacid dehalogenase (configuration-inverting)
2-haloacid_dehalogenase_(configuration-inverting)
Chemical compound
stepwise debromination, leading to less brominated derivatives or complete dehalogenation. DBNPA + Reducing Agent → Mono- or Debrominated Products Additionally
DBNPA
Cyanation Cyclometalation Decarbonylation Decarboxylation Dehydration Dehalogenation Dehydrogenation Dehydrohalogenation Deprotonation Desilylation Dimerisation
List_of_inorganic_reactions
chloride-lyase (deaminating). Moriguchi M, Hoshino S, Hatanaka S-I (1987). "Dehalogenation and deamination of l-2-amino-4-chloro-4-pentenoic acid by Proteus mirabilis"
L-2-amino-4-chloropent-4-enoate dehydrochlorinase
L-2-amino-4-chloropent-4-enoate_dehydrochlorinase
Organic compound containing at least one covalent carbon-iodine bond
is a mammalian enzyme with the unusual function of aerobic reductive dehalogenation of iodine- or bromine-substituted organic substrates. Bromoxynil and
Organoiodine_chemistry
Species of bacterium
characterization of Desulfitobacterium sp. strain Y51 capable of efficient dehalogenation of tetrachloroethene and polychloroethanes". Bioscience, Biotechnology
Desulfitobacterium_hafniense
Study of the chemical effects of radiation on matter
#10116942 Process for the solvent extraction for the radiolysis and dehalogenation of halogenated organic compounds in soils, sludges, sediments and slurries
Radiation_chemistry
Study of compounds containing a boron-carbon bond
However, the corresponding aromatic dianion, (BR)2− 3, forms from careful dehalogenation of a RNBCl2 species. Organometallic compounds with metal-boron bonds
Organoboron_chemistry
Process used to treat contaminated media such as water and soil
toxic compound. For example, under anaerobic conditions, the reductive dehalogenation of TCE may produce dichloroethylene (DCE) and vinyl chloride (VC), which
Bioremediation
Chemical compound
ortho-quinonedimethane, also known as xylylene. This species can be trapped when the dehalogenation is conducted in the presence of iron carbonyl. Coupling of xylylene
Xylylene_dibromide
Enzyme
deletion of C terminal valines from both subunits, allows the catalysis of dehalogenation of BrdUMP preceding the mechanism described above and the covalent bond
Thymidylate_synthase
Enzyme
vicinal halohydrins. In several species of bacteria, it catalyses the dehalogenation of halohydrins to produce the corresponding epoxides. Different isoforms
Halohydrin_dehalogenase
Functional group in organic chemistry
potassium iodide in acetone. The halo group can be removed in reductive dehalogenation of halo ketones. α-Halo ketones can also be converted to alkenes by
Α-Halo_ketone
Type of anaerobic respiration
the terminal electron acceptor, which results in their dehalogenation. Reductive dehalogenation is the process by which this occurs. It involves the reduction
Halorespiration
Class of organic compounds with three rings sharing a single carbon bond
Walker, K. Wiberg, and J. Michl, 1982). Obtained through gas-phase dehalogenation with alkali metal atoms. Stable only in frozen gas matrix below 50 K;
Propellane
Chemistry of organic compounds with arsenic–carbon bond
a four-membered configuration. Synthesis is typically by reductive dehalogenation with a metal. Protic arsines oxidize to oligomers. For example, methylarsine
Organoarsenic_chemistry
Divalent organolead(II) analogues of carbenes
plumbylenes. Alternatively, plumbylenes may be synthesized from the reductive dehalogenation of tetravalent organolead compounds (R2PbX2). The bonding and reactivity
Plumbylene
Chemical compound
may resist aerobic biodegradation in soil and water, but anaerobic dehalogenation can occur. In aquatic environments, 1-chloropropane is not expected
N-Propyl_chloride
Species of bacterium
1093/femsec/fix135. PMID 29040502. Wiegel J, Zhang X, Wu Q (May 1999). "Anaerobic dehalogenation of hydroxylated polychlorinated biphenyls by Desulfitobacterium dehalogenans"
Desulfitobacterium dehalogenans
Desulfitobacterium_dehalogenans
Soil or water measurement
which is performed by PCE-RDase, reduces PCE into TCE by reductive dehalogenation, where a hydride replaces the chlorine. The chloride lost from PCE gains
Adsorbable_organic_halides
structure of novel polycyclic species from toluene and m-xylene and the dehalogenation product of difluoro(diisopropylamino)borane". Journal of the American
Borylene
Solid polymers of only silicon and hydrogen
the final products. Polysilicon hydrides may also be produced by the dehalogenation of polysilicon halides. An illustrative reaction is the debromination
Polysilicon_hydride
chlorinated compounds initially, recent studies have revealed reductive dehalogenation of bromine and iodine moieties in aromatic pesticides. Other reactions
Microbial_biodegradation
Chemical phenomenon
2-methylcyclohexanol In general, if more than one alkene can be formed during dehalogenation by an elimination reaction, the more stable alkene is the major product
Evelyn_effect
Chemical compound
chloride) from which two chlorine atoms are cleaved with zinc in a dehalogenation reaction: An early synthesis uses benzilmonohydrazone (from Diphenylethanedione
Diphenylketene
decarboxylations, nitrations, as well as oxidative and reductive dehalogenations. Engineering efforts often strive for 1) improved stability 2) improved
Cytochrome_P450_engineering
Species of bacterium
oxidation, dehydrogenation, epoxidation, hydrolysis, hydroxylation, dehalogenation and desulfurization) a wide range of hydrophobic compounds, and xenobiotics
Rhodococcus_erythropolis
Family of enzymes
Abrahim A.; Moore, Bradley S. (2017). "Enzymatic Halogenation and Dehalogenation Reactions: Pervasive and Mechanistically Diverse". Chemical Reviews
Chloride_peroxidase
Chemical compound
hydrolysis to benzophenone. (C6H5)2CCl2 + H2O → (C6H5)2CO + 2 HCl Reductive dehalogenation of diphenyldichloromethane with copper or with nickel gives tetraphenylethylene:
Diphenyldichloromethane
Chemical compound
PoCl2 can be obtained either by halogenation of polonium metal or by dehalogenation of polonium tetrachloride, PoCl4. Methods for dehalogenating PoCl4 include
Polonium_dichloride
Chemical compound
Rahman, Imran; Moore, Bradley S. (12 October 2016). "Enzymatic Reductive Dehalogenation Controls the Biosynthesis of Marine Bacterial Pyrroles". Journal of
Pentabromopseudilin
Finally, a change in the binding capability will not let the reaction of dehalogenation to proceed any further. One important aspect to notice is that there
Muconate_lactonizing_enzyme
Environmental cleanup method
temperatures will enhance bioremediation, hydrolysis and iron reductive dehalogenation. Powell, Thomas, et al. "New advancements for in situ treatment using
Electrical_resistance_heating
Class of enzymes
2-monochloropropionate dehalogenation by the two dehalogenases of Pseudomonas putida PP3: evidence for two different dehalogenation mechanisms". Journal
2-haloacid dehalogenase (configuration-retaining)
2-haloacid_dehalogenase_(configuration-retaining)
complex is Ni(η2-C6H4)(dcpe) (dcpe = Cy2PCH2CH2PCy2). It is produced by dehalogenation of the bromophenyl complex NiCl(C6H4Br-2)(dcpe) with sodium amalgam
Transition metal benzyne complex
Transition_metal_benzyne_complex
Organic compound made by removing substituents from an aromatic ring
precursors to benzynes under milder conditions. Benzyne is generated by the dehalogenation of 1-bromo-2-fluorobenzene by magnesium. Anthranilic acid can be converted
Aryne
Rauhut–Currier reaction Racemization Reductive amination Reductive dehalogenation of halo ketones Reed reaction Reformatskii reaction, Reformatsky reaction
List_of_organic_reactions
Chemical compound
The α-amido centers stabilize silylenes by π-donation. The dehalogenation of diorganosilicon dihalides is a widely exploited. In one study diphenylsilylene
Silylene
dehalogenase. Heppel LA, Porterfield VT (November 1948). "Enzymatic dehalogenation of certain brominated and chlorinated compounds" (PDF). The Journal
Alkylhalidase
Settlement in Tasman District, New Zealand
the work; EDL supplied the remediation technology: Mechano-Chemical Dehalogenation (MCD). The site was handed back to the Tasman District Council in November
Māpua,_New_Zealand
Class of enzymes
4-dichlorobenzoate. Romanov V, Hausinger RP (1996). "NADPH-dependent reductive ortho dehalogenation of 2,4-dichlorobenzoic acid in Corynebacterium sepedonicum KZ-4 and
2,4-Dichlorobenzoyl-CoA reductase
2,4-Dichlorobenzoyl-CoA_reductase
Species of bacterium
ISSN 0302-8933. S2CID 28823572. Mohn WW, Kennedy KJ (April 1992). "Reductive dehalogenation of chlorophenols by Desulfomonile tiedjei DCB-1". Applied and Environmental
Desulfomonile_tiedjei
Class of enzymes
Müller R, Mörsberger F, Otto MK, Lingens F (October 1989). "Enzymatic dehalogenation of pentachlorophenol by extracts from Arthrobacter sp. strain ATCC 33790"
Pentachlorophenol monooxygenase
Pentachlorophenol_monooxygenase
Protein domain
metabolism: epoxide ring opening and tetrachlorohydroquinone reductive dehalogenation are two examples of the reactions catalysed by these bacterial GSTs
Glutathione S-transferase, C-terminal domain
Glutathione_S-transferase,_C-terminal_domain
Chemical compound
undergo carbonization at high temperatures near 900 °C and reductive dehalogenation carbonization when exposed to pyrrolidine at room temperature. Attempts
PIDA_(polymer)
Chemical reaction
(homocoupling) Ar–Zn–X + H2O → Ar–H + HO–Zn–X (reaction accompanied by dehalogenation) Nickel catalyzed systems can operate under different mechanisms depending
Negishi_coupling
Class of enzymes
PMID 6497878. Heppel LA, Porterfield VT (November 1948). "Enzymatic dehalogenation of certain brominated and chlorinated compounds". The Journal of Biological
4-chlorobenzoate_dehalogenase
Chemical compound
Miroshnikov, Anatoly I.; Konstantinova, Irina D. (2021-04-07). "Radical Dehalogenation and Purine Nucleoside Phosphorylase E. coli: How Does an Admixture of
2-Fluoroadenine
American engineer and inventor
Chris Clausen; et al. (March 1, 2005). "Field demonstration of DNAPL dehalogenation using emulsified zero-valent iron". Environmental Science & Technology
Jacqueline_Quinn_(engineer)
Species of bacterium
aliphatic alkanes into nonhazardous products. The catalysis of reductive dehalogenation of chlorinated compounds is dependent on the presence and expression
Dehalogenimonas lykanthroporepellens
Dehalogenimonas_lykanthroporepellens
currently includes 14 distinct enzymes with experimentally confirmed dehalogenation activity. An analysis of the sequences and structures of haloalkane
Haloalkane_dehalogenase
Class of silicon chemical compounds
compound was reported by Kira et al. in 2003, synthesized by reductive dehalogenation of tetrachlorosilane using potassium graphite. This tetraalkyl-substituted
Trisilaallene
American chemist (born 1965)
(PCB). Rundhaug's areas of research interest have been electrochemical dehalogenation of halogenated hydrocarbons such as PCBs, water desalination, blood
Patrick_Rundhaug
selective C‒N cross-coupling reactions while suppressing undesirable dehalogenation processes in dual Ni-photocatalysis. 2003 – JSPS Award, The Japan Society
Dirk_M._Guldi
Organophosphorus compound with a phosphorus–phosphorus double bond
disphosphene syntheses involve dehalogenation of bulkyl aryldichlorophosphine (ArPCl2). Mg is a typical dehalogenation reagent: 2 ArPCl2 + 2 Mg → ArP=PAr
Diphosphenes
Pharmaceutical compound
of the standard lithium aluminum hydride, since the latter causes a dehalogenation side reaction leading to the elimination of a bromine atom. 3-DOB was
2,5-Dimethoxy-3-bromoamphetamine
2,5-Dimethoxy-3-bromoamphetamine
Chemical compound
degradation of polonium tetrabromide (PoBr4) in a vacuum at 200 °C; dehalogenation of polonium tetrabromide by hydrogen sulfide at low temperatures (however
Polonium_dibromide
Nijenhuis, I.; Lechner, U.; Adrian, L. (Jun 2013). "Genome sequences of two dehalogenation specialists – Dehalococcoides mccartyi strains BTF08 and DCMB5 enriched
List of sequenced bacterial genomes
List_of_sequenced_bacterial_genomes
the neutral diene complex. Diene complexes can also be produced by dehalogenation of 1,4-dihalobutene derivatives: Fe2(CO)9 + C6H4(CH2Br)2 → FeBr2 +
(Diene)iron_tricarbonyl
Enzyme
1016/0022-2836(87)90190-2. PMID 3656428. Li S, Wackett LP (September 1993). "Reductive dehalogenation by cytochrome P450CAM: substrate binding and catalysis". Biochemistry
Camphor_5-monooxygenase
DEHALOGENATION
DEHALOGENATION
DEHALOGENATION
DEHALOGENATION
Boy/Male
Hindu
God of wind, Brilliant, Shining
Surname or Lastname
English
English : possibly from a pet form of an Old French personal name, Pamphile, from Greek Pamphilos, the name of a 4th-century martyr, from pan ‘all’ + -philos ‘dear to’, ‘beloved of’.
Boy/Male
Tamil
Ravikeerti | ரவிகீரà¯à®¤à¯€
Whose fame is like Sun
Girl/Female
Indian
All
Girl/Female
American, Australian, British, English
Supplanter; Feminine Variant of Jay
Male
French
Norman French form of Latin Jodocus, JOSCE means "lord."
Boy/Male
Indian
Intelligent
Boy/Male
Arabic, Muslim
Immortal
Boy/Male
Indian, Telugu
Miracle
Boy/Male
Hindu, Indian, Malayalam, Marathi
Seeker of God
DEHALOGENATION
DEHALOGENATION
DEHALOGENATION
DEHALOGENATION
DEHALOGENATION