A PROCESS FOR PREPARING 2-AZASPIRO-(4.4)-NONAN-3-ONE, 2-AZASPIRO-(4.5)-DECAN-3-ONE AND 2-AZASPIRO-(4.6)- UNDECAN-3-ONE

摘要

An improved process for the preparation of cyclic amino acids by a novel synthesis is described where a dinitrile derivative is converted in two steps to the desired products, as well as valuable intermediates used in the process.