BF
<sub>3</sub>
Mediated [1,5]‐Hydride Shift Triggered Cyclization: Thioethers Join the Game
作者:Elvira R. Zaitseva、Alexander Yu. Smirnov、Vladimir I. Timashev、Vadim I. Malyshev、Ekaterina A. Zhigileva、Andrey A. Mikhaylov、Michael G. Medvedev、Nadezhda S. Baleeva、Mikhail S. Baranov
DOI:10.1002/ejoc.202200547
日期:2022.7.7
1,5-Hydride shift triggered the cyclization of 2-(2-(benzylthio)benzylidene)malonates to thiachromanes, which are presented for the first time. Boron trifluoride as a reaction promotor is the key of this C−H activation success. Quantum chemical calculations have shown that the studied reaction proceeds via a O–BF2–O chelate, which was confirmed by NMR-analysis.
1,5-氢化物位移触发了 2-(2-(苄硫基)亚苄基)丙二酸酯环化为硫杂色烷,这是首次提出的。三氟化硼作为反应促进剂是这种 C-H 活化成功的关键。量子化学计算表明,所研究的反应是通过O-BF 2 -O 螯合物进行的,这已通过 NMR 分析得到证实。