Preparation of enantiomerically pure 9-azabicyclo[3,3,1]nonene derivatives. Stereochemical requirements of vinyl- and allylsilanes in iminium ion initiated cyclization
作者:Laurent Vidal、Jacques Royer、Henri-Philippe Husson
DOI:10.1016/0040-4039(95)00411-5
日期:1995.4
Asymmetric synthesis of the 9-azabicyclo[3,3,1]nonene skeleton of granatanine has been achieved through the cyclization of non-racemic (Z)-vinylsilane oxazolidine (Z)-2, an iminium ion precursor. The corresponding (E)-isomer (E)-2 did not cyclize in the same conditions.
格拉丹宁的9-氮杂双环[3,3,1]壬烯骨架的不对称合成已通过亚氨基鎓离子前体非外消旋(Z)-乙烯基硅烷恶唑烷(Z)-2的环化反应实现。相应的(E)-异构体(E)-2在相同条件下未环化。