| abstract |
A novel process for the preparation of 1- (aminomethyl) cyclohexylacetic acid of formula I, i.e. gabapentin via a novel intermediate, which is a 1- (nitromethyl) cyclohexylacetic acid derivative of formula II wherein R is hydrogen, benzyl, diphenylmethyl or substituted derivatives thereof, is described. on the aromatic ring by C.sub.1-C.sub.4 alkyl or C.sub.1-cycloalkoxy. |