Nitrodestannylation. A new synthesis of conjugated nitro cyclo olefins
作者:E.J. Corey、Herbert Estreicher
DOI:10.1016/s0040-4039(01)83927-7
日期:——
A new process for the conversion of cyclic ketones to 1-nitro olefins, as outlined below, is described.
如下所述,描述了一种用于将环酮转化为1-硝基烯烃的新方法。
Stereoselective Construction of an Unprecedented 7−8 Fused Ring System in Micrandilactone A by [3,3]-Sigmatropic Rearrangement
作者:Yan-Dong Zhang、Wei-Wu Ren、Yu Lan、Qing Xiao、Kai Wang、Jie Xu、Jia-Hua Chen、Zhen Yang
DOI:10.1021/ol703126q
日期:2008.2.1
constructed by a Bu3Al-promoted Claisen rearrangement. Computational studies indicated that the exocyclic vinylether undergoes a [3,3] sigmatropic process via a chairlike transitionstate to afford exclusively the Z-double bond in the newly generated 8-membered ring with a high level of chirality transfer.