Process for preparing acid addition salts of 3,4-...

Details Process for preparing acid addition salts of 3,4-... Process for preparing acid addition salts of 3,4-...

C - Chemistry, Metallurgy

07

C

260/477.5, 260/4

C07C 69/76 (2006.01) C07C 33/22 (2006.01)

Patent

CA 1178605

ABSTRACT OF THE DISCLOSURE The invention concerns a method for preparing and isolating 3,4-diacyloxy-.alpha.-[(methylamino)-methyl]-benzyl- alco- hol of the formula Image (I) wherein R denotes alkyl or aralkyl, as its acid addition salt, preferably as its hydrochloride. According to the invention an acid addition salt of the compound corresponding to formula I and containing a keto group in its .alpha.-position is reduced by means of an alkali metal borohydride in an acidic solvent, water is added to the reaction mixture and the desired reaction product is extracted into a chlorinated hydrocarbon.

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