Trichloromethyl

The common names of (di chloromethyl)benzene and (trichloromethyl)benzene are benzal chloride and benzo trichloride respectively... 

Further chlorination of the chloromethyl ketone gives the corresponding trichloromethyl ketone which then undergoes hydrolysis to form chloroform... 

Cm OROCARBONSAND Cm OROHYDROCARBONS - BENZYL Cm ORIDE, BENZAL Cm ORIDE AND BENZOTRICm ORIDE] (Vol 6) Bis (trichloromethyl) sulfone [3063-70-8]... 

SULFURIC AND SULFUROUS ESTERS] (Vol 23) l-Pichloromethyl)-2-(trichloromethyl)benzene... 

N-Acylation is readily carried out by reaction of the alkaU metal salts with the appropriate acid chloride. C-Acylation of pyrroles carrying negative substituents occurs in the presence of Friedel-Crafts catalysts. Pyrrole and alkylpyrroles can be acylated noncatalyticaHy with an acid chloride or an acid anhydride. The formation of trichloromethyl 2-pyrryl ketone [35302-72-8] (20, R = CCI3) is a particularly useful procedure because the ketonic product can be readily converted to the corresponding pyrrolecarboxyUc acid or ester by treatment with aqueous base or alcohoHc base, respectively (31). 

A commercial soil or seed treatment fungicide, 5-ethoxy-3-trichlotomethyl-l,2,4-thiadia2ole [2593-15-9] (etridia2ole) is prepared from 2-chloro-3-trichloromethyl-l,2,4-thiadia2ole [5848-93-17, a product of trichloromethanesulfenyl chloride and trichloroacetarnidine (68). 

BenZotrichloride Method. The central carbon atom of the dye is supphed by the trichloromethyl group from iJ-chlorobenzotrichloride. Both symmetrical and unsymmetrical triphenyhnethane dyes suitable for acryhc fibers are prepared by this method. 4-Chlorobenzotrichloride is condensed with excess chlorobenzene in the presence of a Lewis acid such as aluminium chloride to produce the intermediate aluminium chloride complex of 4,4, 4"-trichlorotriphenylmethyl chloride (18). Stepwise nucleophihc substitution of the chlorine atoms of this intermediate is achieved by successive reactions with different arylamines to give both symmetrical (51) and unsymmetrical dyes (52), eg, N-(2-chlorophenyl)-4-[(4-chlorophenyl) [4-[(3-methylphenyl)imino]-2,5-cyclohexadien-l-yhdene]methyl]benzenaminemonohydrochloride [85356-86-1J (19) from. w-toluidine and o-chloroaniline. 

Degradation of carbon tetrachloride by photochemical, x-ray, or ultrasonic energy produces the trichloromethyl free radical which on dimeri2ation gives hexachloroethane. Chloroform under strong x-ray irradiation also gives the trichloromethyl radical intermediate and hexachloroethane as final product. 

Benzimidazole, l-methyl-2-trichloromethyl-substitution reactions, 5, 432 Benzimidazole, naphthoyl-, 1, 327 Benzimidazole, 5-nitro-alkylation, 5, 390 Benzimidazole, 6-nitro-1-oxide... 

Oxetanone, 3,3,4,4-tetramethyl-solvolysis, 7, 380 2-Oxetanone, 4-trichloromethyl-decarboxylation, 6, 374 dehydrochlorination, 7, 374 structure, 6, 366 2-Oxetanone, 3-trimethylsilyl-synthesis, 7, 395... 

Pyridine, 4-(chloromethyl)-l,4-dihydro-4ff-azepines from, 7, 524 ring expansion, 7, 543-544 Pyridine, 2-chloro-6-trichloromethyl-as bactericide, 2, 514 Pyridine, 2-cyano-ions... 

Bromotrichloromethane can also be used effectively in the addition reaction. Because of the preferential abstraction of bromine, a trichloromethyl unit is added to the less substituted carbon atom of the alkene ... 

This result shows than the initially added trichloromethyl group has little influence on the stereochemistry of the subsequent bromine atom-abstraction. The intermediate 2-(trichlor-omethyl)cyclohexyl radical presumably relaxes to the equatorial conformation faster than bromine-atom abstraction occurs. In contrast with addition to A -octahydronaphthalene, the addition is exclusively /ran -diaxial ... 

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