Asymmetric Heck Reaction of (<i>R</i>) 1-<i>tert</i>-Butylsulfinylcyclopentene with Arenediazonium Salts
作者:Julián Priego、Juan Carlos Carretero
DOI:10.1055/s-1999-2890
日期:——
The asymmetric Heck reaction of the readily available (R) 1-tert-butylsulfinyl-1-cyclopentene with a variety of para- and meta-substituted arenediazonium tetrafluoroborates is described. In the presence of Ag2CO3 as base, in CH3CN at rt, the reactions occur in good yields (72-79%) with high diastereoselectivities (de = 82-92%) to afford (3S,SR)-3-aryl-2-tert-butylsulfinyl-1-cyclopentenes as the major adducts. In contrast, poor results were obtained from ortho-substituted arenediazonium salts.