Metal-Free Coupling of Saturated Heterocyclic Sulfonylhydrazones with Boronic Acids
摘要:
The coupling of aromatic moieties with saturated heterocyclic partners is currently an area of significant interest for the pharmaceutical industry. Herein, we present a procedure for the metal-free coupling of 4-, 5-, and 6-membered saturated heterocyclic p-methoxyphenyl (PMP) sulfonylhydrazones with aryl and heteroaromatic boronic acids. This procedure enables a simple, two-step synthesis of a range of functionalized sp(2)-sp(3) linked bicyclic building blocks, including oxetanes, piperidines, and azetidines, from their parent ketones.
Metal-Free Coupling of Saturated Heterocyclic Sulfonylhydrazones with Boronic Acids
作者:Daniel M. Allwood、David C. Blakemore、Alan D. Brown、Steven V. Ley
DOI:10.1021/jo402526z
日期:2014.1.3
The coupling of aromatic moieties with saturated heterocyclic partners is currently an area of significant interest for the pharmaceutical industry. Herein, we present a procedure for the metal-free coupling of 4-, 5-, and 6-membered saturated heterocyclic p-methoxyphenyl (PMP) sulfonylhydrazones with aryl and heteroaromatic boronic acids. This procedure enables a simple, two-step synthesis of a range of functionalized sp(2)-sp(3) linked bicyclic building blocks, including oxetanes, piperidines, and azetidines, from their parent ketones.
Gold-Catalyzed Dehydrazinative C(sp)-S Coupling Reactions of Arylsulfonyl Hydrazides with Ethynylbenziodoxolones for Accessing Alkynyl Sulfones
作者:Popat S. Shinde、Nitin T. Patil
DOI:10.1002/ejoc.201700524
日期:2017.6.30
A gold(III)-catalyzed dehydrazinative coupling reaction between TIPS-EBX and arylsulfonylhydrazides has been realized for the synthesis of arylalkynyl sulfones. The scope and versatility of the reaction has been demonstrated by efficient synthesis of 23 derivatives with diverse structural features.