Compounds of the formula
wherein R is (C1-C3)alkyl, are intermediates for use in the preparation of certain neuroleptic, racemic or optically active perhydro-1H-pyrido [1,2-a] pyrazines.
式中的化合物
其中 R 为(C1-C3)烷基,是用于制备某些神经性、外消旋或光学活性全氢-1H-
吡啶并[1,2-a]
吡嗪的中间体。