Efficient asymmetric synthesis of 3-substituted β-sultams
作者:Dieter Enders、Stefan Wallert
DOI:10.1016/s0040-4039(02)00980-2
日期:2002.7
The asymmetric synthesis of 3-substituted 1,2-thiazetidine 1,1-dioxides by cyclization of β-amino-sulfonyl chlorides is reported. The synthesis is based on the aza-Michael addition of (R,R,R)-2-amino-3-methoxymethyl-2-azabicyclo[3.3.0]octane (RAMBO) to alkenyl–sulfonates.