One-pot synthesis of sulfonyl (E)-stilbenes by nitrobenzene-mediated dimerizative desulfonation of benzylic sulfones
摘要:
A facile one-pot synthetic route for preparing sulfonyl (E)-stilbenes 4 is developed. The efficient route is realized by a nitrobenzene (PhNO2)-mediated dimerizative desulfonation of benzylic sulfones 3 in the presence of sodium hydride (NaH) in good yields. Some synthetic investigations of sulfonyl stilbenes 4 are also examined. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis of sulfone derivatives via palladium-catalyzed cross-coupling of benzyl trimethylammonium triflates and sulfonyl hydrazides
作者:Juelin Wan、Weijie Yu、Tao Wang、Jin Luo
DOI:10.1080/10426507.2021.2016758
日期:2022.7.3
Abstract A palladium-catalyzedcross-coupling of benzyl trimethylammonium triflates and sulfonyl hydrazides for the synthesis of various benzyl sulfones is reported. This novel protocol shows widespread functional group tolerance, leading to the desired sulfones in moderate to excellent yields.
A general and practical sulfonylation of benzylic ammonium salts with sulfonyl hydrazides for the synthesis of sulfones
作者:Haibo Zhu、Yingying Zhang、Yishuai Liu、Liu Yang、Zongbo Xie、Guofang Jiang、Zhang-Gao Le
DOI:10.1016/j.tetlet.2020.151975
日期:2020.6
transition-metal-free cross-coupling of sulfonyl hydrazides with benzyl ammonium salts has been developed to synthesize benzyl sulfones using Cs2CO3 as base under mild conditions. The protocol employs stable and easy to handle coupling partners, and is endowed with good substrate compatibility, leading to functional benzyl sulfones in good yields.
已经开发出一种实用且有效的方法,该方法采用磺酰肼与苄基铵盐的无过渡金属交叉偶联,以Cs 2 CO 3为碱,在温和条件下合成苄基砜。该方案使用稳定且易于操作的偶联伙伴,并具有良好的底物相容性,从而可以高收率生产功能性苄砜。
Base-controlled divergent synthesis of vinyl sulfones from (benzylsulfonyl)benzenes and paraformaldehyde
作者:Fuhong Xiao、Yangling Hu、Huawen Huang、Fen Xu、Guo-Jun Deng
DOI:10.1039/d0ob00362j
日期:——
A tuneable metal-free protocol for the selective preparation of α-substituted vinyl sulfone and (E)-vinyl sulfone derivatives has been described. The base played an important role in the selectivity control of transformation.
作者:Charlotte S. Richards-Taylor、David C. Blakemore、Michael C. Willis
DOI:10.1039/c3sc52332b
日期:——
electrophilic coupling partner, such as a benzylic, allylic or alkyl halide, an electron-poor arene, or a cyclic epoxide, to provide the corresponding sulfone products in good to excellent yields. The mild reaction conditions and use of commercially available reaction components allows the easy preparation of a broad range of sulfones featuring a variety of functional groups. The process obviates the need
Pd(NHC)-catalyzed alkylsulfonylation of boronic acids: a general and efficient approach for sulfone synthesis
作者:Haibo Zhu、Yajing Shen、Qinyue Deng、Jinjin Chen、Tao Tu
DOI:10.1039/c7cc05851a
日期:——
Robust N-heterocyclic carbene palladium complexes are highly efficient catalysts for direct alkylsulfonylation of (hetero)aryl- or alkenyl-boronic acids with potassium metabisulfite and (hetero)alkyl-halides. Among them, acenaphthoimidazolylidene palladium(II) complexes exhibited the highest activities, and up to quantitative yields were obtained for diverse structurally distinct sulfones under very