作者:Juan Carlos Carretero、Javier Adrio
DOI:10.1055/s-2001-17511
日期:——
The use of sulfoxides as chiral auxiliaries in intramolecular Pauson-Khand (PK) reactions is described. In particular, the tert-butylsulfinyl group acts as a very efficient chiral auxiliary in intramolecular PK reactions of 1-sulfinyl-1,6-enynes. As the starting enynes are readily available in optically pure form and the final desulfinylation step is high yielding, this procedure constitutes an efficient alternative to the synthesis of enantiomerically pure bicyclo[3.3.0]oct-1-en-3-ones.
描述了亚磺酰胺作为手性辅助剂在分子内Pauson-Khand(PK)反应中的应用。特别是,叔丁基亚磺酰基团在1-亚磺酰基-1,6-炔烃的分子内PK反应中作为非常有效的手性辅助剂。由于起始的炔烃易于获得光学纯的形式,而且最终的去亚磺酰化步骤产率很高,因而该方法为合成对映体纯的双环[3.3.0]八烯-1-酮提供了一种高效的替代方案。