Preparation of...

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C - Chemistry, Metallurgy

07

D

260/290.6

C07D 213/66 (2006.01)

Patent

CA 1068710

ABSTRACT OF THE DISCLOSURE 2-Methyl-3-hydroxy-4-ethylaminomethyl-5-methylmercapto- methyl-pyridine and its acid addition salts are produced by a novel process involving treating a pyridine derivative of the general formula Image wherein R is -CH=N-CH2- or -CH2-N=CH-, or a salt thereof, with sodium borohydride, with zinc and an acid, or with hydro- gen in the presence of Raney nickel. This novel process pro- vides the compounds in very high yields and in excellent pur- ity.

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