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где алкил; R2 - водород или алкил, каталитическим гидрироваиием производных 4-оксопиперидина с последующим выделением целевого продукта известными приемами, отличающийс тем, что, с целью упрощени 5 процесса, гидрирование ведут в присутствии промышленного катализатора КЧ-СггОз, содержащего 19,8% Ni и 79,5% Сг20з, в водной среде при 110-130° С. where is alkyl; R2 is hydrogen or alkyl, by catalytic hydrogenation of 4-oxopiperidine derivatives followed by isolation of the target product by known methods, characterized in that, in order to simplify 5 of the process, the hydrogenation is carried out in the presence of an industrial catalyst CC-CrHO3 containing 19.8% Ni and 79 5% Cr20z, in an aqueous medium at 110-130 ° C.
SU2007407A1974-03-251974-03-25
Method for preparing 4-hydroxypiperidine derivatives
SU498296A1
(en)