Carbon carbonyl chloride

Carbon monoxide forms addition compounds. With chlorine in sunlight or in the presence of charcoal in the dark, carbonyl chloride... 

Chlorine reacts directly with carbon monoxide to give carbonyl chloride (phosgene) ... 

Preparation of Arylcarboxylic Acids and Derivatives. The general Friedel-Crafts acylation principle can be successfully appHed to the preparation of aromatic carboxyUc acids. Carbonyl haUdes (phosgene, carbonyl chloride fluoride, or carbonyl fluoride) [353-50-4] are diacyl haUdes of carbonic acid. Phosgene [75-44-5] or oxalyl chloride [79-37-8] react with aromatic hydrocarbons to give aroyl chlorides that yield acids on hydrolysis (133) ... 

Benzoates. The selective debenzoylation of sucrose octabenzoate [2425-84-5] using isopropylamine in the absence of solvents caused deacylation in the furanose ring to give 2,3,4,6,1/3/6 -hepta- and 2,3,4,6,1/6 -hexa-O-benzoyl-sucroses in 24.1 and 25.4% after 21 and 80 hours, respectively (54). The unambiguous assignment of partially benzoylated sucrose derivatives was accompHshed by specific isotopic labeling techniques (54). Identification of any benzoylated sucrose derivative can thus be achieved by comparison of its C-nmr carbonyl carbon resonances with those of the assigned octabenzoate derivative after benzoylation with 10 atom % benzoyl—carbonyl chloride in pyridine. 

Related reactions are those of sodium azide with carbon disulflde to give 5-mercapto-l,2,3,4-thiatriazole (see 8ection IV) and with thio-carbonyl chloride to give 5-chloro-l,2,3,4-thiatriazole. ... 

Chloroformates or carbonyl chloride react with 2-piperidone hydrazones to give triazolopyridine-3-ones (86JAP(K)69776), and there are further examples of the production of 3-thiols from a hydrazine and carbon disulfide (83USP4419516, 88EUP254623). 

Chlorkohlen-oxyd, n. carbonyl chloride, -oxyd-ather, m. ethyl chloroformate. -saure, /. chlorocarbonic acid (chloroformic acid, CICOOH). -sMureamtd, n. chlorocarbonyl amide (carbamyl chloride, H2NCOCI). -stoff, m. carbon chloride, carbon tetrachloride (sometimes with the adj. vierfach). 

Kohlen-karbonit, n. kohlencarbonite (trade name of an explosive), -klein, n. small coal, -klemme,/, (Elec.) carbon terminal, -kom, n. carbon granule, -licht, n. carbon light, -losche, /, coal dust or slack, -mehl, n, coal dust, powdered coal, -meiler, m, charcoal pile, -monoxyd, n, carbon monoxide, -mulm, m, coal dust, slack charcoal dust, -olsaure, /. carbolic acid, -oxycblorid, n. carbon oxychloride, carbonyl chloride,... 

Kohlensaure,/. carbonic acid carbon dioxide, -anhydrid, rt. carbonic anhydride (carbon dioxide), -ausscheidung,/. (Physiol.) c Tbon dioxide excretion, -bestimmer, m. apparatus for determining carbon dioxide, -brot, n, aerated bread, -chlorid, n. carbonyl chloride, -entwickelung,/. evolution of carbon dioxide, -ester, m. carbonic ester, -flasche, /. carbon dioxide cylinder, -gas, n, carbonic add gas (carbon dioxide), -gehalt, m. carbon dioxide content. 

Names ending in -carbonsdure are translated -carboxylic add, not -carbonic acid (but -carbonyl chloride is preferred to -carboxylyl chloride). 

More recently Hand et al. (ref. 9) have studied the decomposition reaction of N-chloro-a-amino acid anions in neutral aqueous solution, where the main reaction products are carbon dioxide, chloride ion and imines (which hydrolyze rapidly to amine and carbonyl products). They found that the reaction rate constant of decarboxylation was independent of pH, so they ruled out a proton assisted decarboxylation mechanism, and the one proposed consists of a concerted decarboxylation. For N-bromoamino acids decomposition in the pH interval 9-11 a similar concerted mechanism was proposed by Antelo et al. (ref. 10), where the formation of a nitrenium ion (ref. 11) can be ruled out because it is not consistent with the experimental results. Antelo et al. have also established that when the decomposition reaction takes place at pH < 9, the disproportionation reaction of the N-Br-amino acid becomes important, and the decomposition goes through the N,N-dibromoamino acid. This reaction is also important for N-chloroamino compounds but at more acidic pH values, because the disproportionation reaction... 

MRH Bromine 1.21/91, carbon tetrachloride 2.89/83, chlorine 3.85/82 Silane burns in contact with bromine, chlorine or covalent chlorides (carbonyl chloride, antimony pentachloride, tin(IV) chloride, etc.) [1], Extreme caution is necessary when handling silane in systems with halogenated compounds, as a trace of free halogen may cause violent explosions [2],... 

Shah, H., Hartman, S.P., and Weinhouse, S. 1979. Formation of carbonyl chloride in carbon tetrachloride metabolism by rat liver in vitro. Cancer Res. 39 3942- 3947. 

Carbonyl chloride in air at maximum allowable concentration may be measured by colorimetry. Prepare a solution containing 5% p-dimethylaminoben-zaldehyde and 5% diphenylamine in carbon tetrachloride. Soak a paper in this solution. Allow it to dry. The color of the paper turns from yellow to deep orange in the presence of carbonyl chloride. 

Chlorine forms carbonyl chloride, COCl with carbon monoxide suhuryl chloride SO2CI with sulfur dioxide and chloramines (monochloramine, NH2CI, and dichloramine, NHCI2) with ammonia. Chloramines are often found at trace concentrations in sewage wastewater following chlorine treatment. 

Synonyms carbonyl chloride carhon oxychloride chloroformyl chloride carbonic dichloride... 

Carhonyl chloride, Carbonic dichloride, Chloroformyl chloride Carbonyl chloride, Carbon oxychloride Carbonyl chloride, Carbonic dichloride, Chloroformyl chloride Carbonyl chloride. Carbon oxychloride... 

Phosgene Carbonyl chloride, Carbonic dichloride, Chloroformyl chloride... 

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