Method for producing dichloromethylpyridines

Details Method for producing dichloromethylpyridines Method for producing dichloromethylpyridines

1992-12-14

1994-03-01

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546290, 546314, 546345, C07D21326

Patent

active

052909441

ABSTRACT:
A method for producing a dichloromethylpyridine of the formula (II): ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 which are independent of one another, is a hydrogen atom, a halogen atom, an alkoxy group or a phenoxy group which may be substituted, provided that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are not simultaneously hydrogen atoms, which comprises reacting a trichloromethylpyridine of the formula (I): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, with a reducing agent, wherein:

REFERENCES:
patent: 4260766 (1981-04-01), Morris
patent: 4499276 (1985-02-01), Malhotra et al.
patent: 4499277 (1985-02-01), Malhotra et al.
Tetrahedron Letters, No. 48, 1968, pp. 4951-4952, I. M. Downie, et al., "Reduction of Perhalocompounds with Tertiary Phosphines and Phosphorous Tris (Di-N-Alkyl)Amides".

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