Preparation of dichlorotrifluoromethyltoluenes including novel i

Details Preparation of dichlorotrifluoromethyltoluenes including novel i Preparation of dichlorotrifluoromethyltoluenes including novel i

1987-08-11

1989-10-24

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

564417, 568938, 570127, 570184, 570194, C07C 1720, C07C 1724, C07C 1732, C07C 2124

Patent

active

048764043

ABSTRACT:
Dichlorotrifluoromethyltoluenes useful in producing some medicines and agricultural chemicals are formed with good yields by reacting dichlorotrichloromethyltoluenes with hydrogen fluoride usually at 0.degree.-100.degree. C. under pressure of 3-20 kg/cm.sup.2. Besides known 3,4-dichloro-6-trifluoromethyltoluene and 3,4-dichloro-5-trifluoromethyltoluene, novel isomers are also obtained by this method.

REFERENCES:
patent: 3297771 (1967-01-01), Leebrick et al.
patent: 3966832 (1976-06-01), Lademann et al.
patent: 4080392 (1978-03-01), Ryf
patent: 4129602 (1978-12-01), Sendlak
patent: 4462937 (1984-07-01), Ramanadin et al.
"A New Method For the Trifluoromethylation of Aromatics", by A. Marhold et al., Journal of Fluorine Chemistry, 18 (1981), pp. 281-291.

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