Synthesis and conjugate and 1,2 addition reactions of a sterically hindered allylic sulfoximine
作者:Stephen G. Pyne、Gernot Boche
DOI:10.1016/s0040-4020(01)81928-1
日期:1993.1
The synthesis of allylic sulfoximines and is described. The conjugate addition reactions of lithiated with cyclic and acyclic Michael acceptors gives mainly 1,4-γ and 1,4-α adducts respectively in THF and 1,4-α and 1,4-γ adducts respectively in HMPA/THF. The reaction of lithiated and benzaldehyde gives only 1,2-α adducts in THF, however 1,2-α and 1,2-γ adducts were isolated when HMPA/THF was employed
烯丙基亚磺酰亚胺的合成和进行说明。锂与环状和无环迈克尔受体的共轭加成反应分别在THF和HMPA / THF中分别分别产生1,4-γ和1,4-α加合物和1,4-α和1,4-γ加合物。锂化和苯甲醛的反应在THF中仅生成1,2-α加合物,但是当将HMPA / THF用作溶剂时,会分离出1,2-α和1,2-γ加合物。二苯甲酮仅给出1,2-γ加合物。