Continuous-flow generation of diazoesters and their direct use in S–H and P–H insertion reactions: synthesis of α-sulfanyl, α-sulfonyl, and α-phosphono carboxylates
作者:Hannah E. Bartrum、David C. Blakemore、Christopher J. Moody、Christopher J. Hayes
DOI:10.1016/j.tet.2013.01.020
日期:2013.3
The synthesis of α-sulfanyl, α-sulfonyl, and α-phosphono carboxylates has been achieved using a two-step procedure involving the in-flow generation of diazoesters from sulfonylhydrazones, via Bamford–Stevens elimination, and then subsequent S–H, sulfinate, and P–H carbene insertion reactions. The method for α-sulfonyl ester is particularly noteworthy as it represents a very atom economic (‘green’)
Free-radical chain isomerization of N-vinylsulfonamides
作者:W. R. Hertler
DOI:10.1021/jo00936a008
日期:1974.11
Solvent‐free, B(C
<sub>6</sub>
F
<sub>5</sub>
)
<sub>3</sub>
‐Catalyzed S−H Insertion of Thiophenols and Thiols with α‐Diazoesters
作者:Peng Wang、Yulin Gong、Xiaoyu Wang、Yangqing Ren、Lei Wang、Lele Zhai、Huilin Li、Xuegong She
DOI:10.1002/asia.202200465
日期:2022.8.15
AbstractDescribed herein is a B(C6F5)3‐catalyzed S−H insertion reaction of thiophenols and thiols with α‐diazoesters to access valuable α‐thioesters. With the established protocol, an array of α‐thioester products are generated in moderate to good yields with broad scope and functional group tolerance. In addition, this reaction maintains its high efficiency on gram scale and the product can be easily transformed into other useful motifs. This reaction proceeds under solvent‐free conditions at room temperature, and generally finishes in twenty minutes upon magnet stirring, which offers an expedient way for the synthesis of thioether‐containing compounds.