作者:James A. Marshall、Vicki H. Audia、Todd M. Jenson、Wayne C. Guida
DOI:10.1016/s0040-4020(01)87587-6
日期:1986.1
recovered allylic alcohols. In the case of the 12- to 14-membered cycloalkenes the recovered alcohols 3a-c were optically active. The 15- and 16-membered cases 3d and e were racemic. Barriers to jump rope rotation were calculated by means of the Still Macro Model program.
由相关的12至16元环酮制备了一系列1,2-双-亚甲基环烷烃单环氧化物(2a -e)。减少与锂在氨,得到相应的反式-和顺-2- methylcycloalkenylmethanols(3A / 4A - 3E / 4E)中的92比:8-78:22。用0.6当量的由异丙氧基钛,(+)-酒石酸二异丙酯和叔丁基氢过氧化物制得的试剂对这些烯丙醇进行急剧的环氧化,生成了环氧醇6a - e的混合物。和回收的烯丙醇。在12至14元环烯烃的情况下,回收的醇3a - c是光学活性的。15和16成员的情况3d和e是外消旋的。借助Still Macro Model程序计算了跳绳旋转的障碍。