A Versatile Synthesis of 3-Phenylsulfonylpyrroles from α-Amino Acids
作者:Ian Burley、Alan T. Hewson
DOI:10.1055/s-1995-4068
日期:1995.9
Reaction between α-benzamidoalkyl ketones 4a-e and the vinyl phosphonium salt 1 produces 3-phenylthio-3-pyrrolines 5a-e which can be converted into N-benzyl-3-phenylsulfonyl pyrroles 7a-e by m-CPBA oxidation, diborane reduction and DDQ aromatisation.
tBuOK/TMSOK‐Mediated “Alkyl Halide to Alkyl Free Radical” Transformation for Transition‐Metal‐Free Benzoin α‐C—H Alkylation
作者:Zhouying Wang、Lu Gan、Zhibin Song、Yunyun Liu、Jie‐Ping Wan
DOI:10.1002/cjoc.202400664
日期:2024.12
(tBuOK or tBuONa) mediated generation of aryl freeradical from aryl iodide remarks a milestone discovery in the freeradical chemistry. However, the equivalent “alkyl halide to alkylfreeradical” transformation has not yet been realized in applicable synthesis by similar catalytic tactic. In this paper, the first practical “alkyl halide to alkylfreeradical” transformation mediated by tBuOK or TMSOK