electron-sacrificial reagents. Herein, we developed a photoenzymatic redox-neutral radical hydrosulfonylation induced by oxidated flavin (FMN) with sulfinates or sulfonyl hydrazines as radical precursors. The reaction involved the excited FMN acquiring an electron from the substrate, and the resulting sulfuryl radical was captured by an alkene. It is then stereoselectively quenched by flavin semiquinone
黄素依赖性酶催化的光诱导非自然反应通常通过还原途径进行,这需要使用电子牺牲试剂。在此,我们开发了一种由氧化黄素(
FMN)以亚
磺酸盐或磺酰
肼作为自由基前体诱导的光酶氧化还原-中性自由基氢磺酰化反应。该反应涉及激发的
FMN 从底物获取电子,产生的
硫酰自由基被烯烃捕获。然后通过氢原子转移被黄素半醌 (
FMN sq )立体选择性猝灭。这项研究规避了对
NADPH 回收系统的需求,并扩展了光
生物催化中的潜在反应模式。