[2 + 4] Annulation of Alkyl(phenyl)phosphinic Chlorides with Enones: Stereoselective Synthesis of δ-Phosphinolactones
作者:Xin Yuan、Xuan Ke、Jiaxi Xu
DOI:10.1021/acs.orglett.2c03878
日期:2022.12.16
Various δ-phosphinolactones (δ-phostines) are efficiently and diastereospecifically synthesized in good to excellent yields from direct [2 + 4] annulation of alkyl(phenyl)phosphinic chlorides and α,β-enones in the presence of LiHMDS. The annulation involves deprotonation, Michael addition, and nucleophilic substitution and features readily available materials, good to excellent yields, diastereospecificity
在 LiHMDS 存在下,通过烷基(苯基)次膦酰氯和 α,β-烯酮的直接 [2 + 4] 环化,可高效且非对映特异性地合成各种 δ- 膦酰内酯(δ-膦酸),产率从好到极好。环化涉及去质子化、迈克尔加成和亲核取代,并具有易于获得的材料、良好到极好的产率、非对映特异性、原子和步骤经济性、广泛的底物范围、易于分离和温和的条件。