Azocine derivatives. Part I. Synthesis of 1-benzazocin-6-one derivatives by direct cyclisation
Abstract
Tetrahydro-1-benzazocin-6(5H)-one derivatives have been made by Dieckmann cyclisation of appropriate diesters, followed by hydrolysis. Attempts to make tetrahydro-1-benzazocin-5(6H)-ones and a tetrahydro-2-benzazocin-6(5H)-one by similar procedures failed.