Highly Stereoselective Synthesis of Tertiary Propargylic Centers and Their Isomerization to Enantiomerically Enriched Allenes
作者:José Luis García Ruano、Leyre Marzo、Vanesa Marcos、Cuauhtémoc Alvarado、José Alemán
DOI:10.1002/chem.201201607
日期:2012.8.6
Center of attention: A new approach for the synthesis of enantiomericallyenriched allenes by isomerization of 2‐p‐tolylsulfinylphenyl propargylic derivatives is presented, which in turn are prepared by reaction of sulfinylated lithium benzylcarbanions with arylsulfonylacetylenes (see scheme). The high control of stereoselectivity in both steps is exerted by the sulfinyl group.