PtCl<sub>2</sub>-Catalyzed Cycloisomerization of 1,8-Enynes: Synthesis of Tetrahydropyridine Species
作者:Anvar Mirzaei、Xiao-Shui Peng、Henry N. C. Wong
DOI:10.1021/acs.orglett.9b01250
日期:2019.5.17
heterocycle species via 6-endo-dig cyclization and [3,3]-sigmatropic rearrangement in acceptable to good yields. The related control experiments and preliminary mechanistic studies indicate a plausible mechanism involving 1,6-endo-dig aminoplatination of the alkyne and allylic [3,3]-sigmatropic rearrangement with total inversion of the allylic moiety.
发展了在氯化铂(II)存在下的1,8-烯炔的环异构化反应,可通过6-内挖环化和[3,3]-σ重排以可接受的良好收率生成双环含氮杂环物质。相关的对照实验和初步的机理研究表明,一个可行的机理涉及炔烃的1,6-内挖氨基电镀和烯丙基[3,3]-σ重排以及烯丙基部分的完全倒置。