The <i>tert</i>-Butylsulfinyl Group as a Highly Efficient Chiral Auxiliary in Asymmetric Pauson−Khand Reactions
作者:Javier Adrio、Juan C. Carretero
DOI:10.1021/ja990546p
日期:1999.8.1
Asymmetric Pauson-Khand Cyclizations of 1-Sulfinylenynes
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.