Grignard reagents coupling with bromo-apopinene, which was prepared by NBS treatment of apopinene, leads to 4-alkylated derivatives of apopinene in high yields. Of particular interest is the convenient preparation of trans δ-pinene. The stereochemistry of these new compounds was established on the basis of NMR considerations.
格氏试剂与
溴-Apopinene偶联,后者是通过
NBS处理Apopinene制备的,可高产率生成Apopinene的4-烷基化衍
生物。特别令人感兴趣的是反式δ-pine烯的方便制备。这些新化合物的立体
化学是基于NMR的考虑而建立的。