p-Menthane-3-carboxaldehyde is a readily available chiral auxiliary used to prepare cycloalkenes and heterocycles bearing a chiral tertiary or quaternary carbon of high enantiomeric purity. The auxiliary is available in both enantiomeric forms and is inexpensive and recyclable. It is cleaved by a ring-closing alkene metathesis reaction directly yielding the cycloalkene.Key words: chiral auxiliary, cleavage reaction, cyclization, ring-closing alkene metathesis, enantioenriched cycloalkenes.
对孟烷-3-甲醛是一种易于获得的手性助剂,用于制备具有高对映体纯度的手性叔碳或季碳的环烯烃和杂环。这种助剂有两种对映体形式,价格低廉且可回收利用。关键词:手性助剂;裂解反应;环化;闭环烯烃偏析;对映体富集环烯烃。