[3,3]-Sigmatropic Rearrangements in the Enantioselective Synthesis of (-)-Methylenolactocin
作者:Xavier Ariza、Jordi Garcia、Natalia Fernández、Marta López、Laia Montserrat、Jordi Ortiz
DOI:10.1055/s-2003-44351
日期:——
A Pd(II)-catalyzed [3,3]-sigmatropic rearrangement is used to transfer chirality from an enantio-enriched alk-3-ene-1,2-diol to a C 2 -symmetrical alk-2-ene-1,4-diol which, in turn, can be converted into a precursor of (-)-methylenolactocin through an additional [3,3]-sigmatropic rearrangement (either Johnson orthoester or Ireland-Claisen rearrangement).
Pd(II) 催化的 [3,3]-sigmatropic 重排用于将手性从富含对映体的 alk-3-ene-1,2-二醇转移到 C 2 -对称 alk-2-ene-1, 4-二醇反过来又可以通过额外的 [3,3]-σ- 重排(约翰逊原酸酯或爱尔兰-克莱森重排)转化为 (-)-亚甲基内酯的前体。