Halogen/Metal vs. Hydrogen/Metal Exchange: General or Specific Site Selectivity as Exemplified in the Camphene Series
作者:László Garamszegi、Manfred Schlosser
DOI:10.1002/cber.19971300112
日期:1997.1
(Z)-(3,3-Dimethylbicyclo[2.2.1]hept-2-ylidene)methyllithium can be readily generated by treatment of (Z)-3-bromomethylene-2,2-dimethylbicyclo[2.2.1]heptane with tert-butyl-lithium. At -75°C, the organometallic intermediate is configurationally stable and reacts with a variety of electrophiles under stereochemical retention.
(Z) - (3,3-二甲基二环[2.2.1]庚-2-亚基)甲基锂可通过处理(Z)-3-溴亚甲基-2,2-二甲基二环的[2.2.1]庚烷与能够容易地生成叔丁基锂。在-75°C下,有机金属中间体结构稳定,并在立体化学保留下与多种亲电试剂反应。