Metal-Free Iodosulfonylation of Internal Alkynes: Stereodefined Access to Tetrasubstituted Olefins
作者:Ravi Kumar、Vikas Dwivedi、Maddi Sridhar Reddy
DOI:10.1002/adsc.201700576
日期:2017.8.17
The stereoselective E‐iodosulfonylation of internal alkynes for synthesizing highly defined tetrasubstituted olefins using sodium phenyl sulfinate and iodine has been achieved. Most of the alkynes explored are non‐symmetrical and the regioselection is under full control. Arylalkynes with various electron‐withdrawing groups like keto, aldehyde, ester, amide, cyano, sulfone, bromo, chloro and iodo on
已实现了内部炔烃的立体选择性E-碘磺酰化,以使用苯基亚磺酸钠和碘合成高定义的四取代烯烃。探索的大多数炔烃是非对称的,区域选择处于完全控制之下。在另一端具有各种吸电子基团的芳炔烃(如酮,醛,酯,酰胺,氰基,砜,溴,氯和碘)被认为是成功制备高官能化烯烃的前体。还发现直接与杂原子束缚的炔烃是合适的底物。