As a continuation of the investigation on 1,2-migration of metal carbene and free carbene, two X-ray structures of β-substituted α-diazocarbonyl compounds were obtained. The relationship between the structure and 1,2-migratory aptitude was discussed and an exploratory photochemical study of the diazo compounds presented.
The first investigation on catalytic asymmetric [2,3]-sigmatrop-ic rearrangement of sulfur ylides generated from carbenoids and allenic phenyl sulfide was carried out. Up to 55% ee value was obtained.
＜正＞1,2-Migration is one of the fundamental reactions in transition metal-catalyzed reaction of a-diazo carbony...
XU, Feng WANG, Jian-Bo (Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Department of Chemical Biology, College of Chemistry, Peking University, Beijing 100871)
