Simultaneous and Stereoselective Construction of Planar and Axial Centers of Chirality
作者:Louis Fogel、Richard P. Hsung、William D. Wulff、Roger D. Sommer、Arnold L. Rheingold
DOI:10.1021/ja010091f
日期:2001.6.1
all of these alkynes, the reaction products could be completely isomerized to the anti isomer by performing the reaction at 120 °C except for the smaller ortho methoxyl complex which only required 50 °C for complete conversion. This includes the very hindered tertbutyl complex3i which was formed as a slightly preferred kinetic product having the syn stereochemistry which was determined by X-ray diffraction