An operationally simple EosinYcatalyzed sulfenylation of hydrazones has been realized to afford a range of thioethers under visible light. The methodology provides high yields of thioethers under ambient conditions employing readily available and inexpensive starting materials. The reaction has broad substrate scope and is compatible with various functional groups.
Sulfonyl Chlorides as Thiol Surrogates for Carbon–Sulfur Bond Formation: One-Pot Synthesis of Thioethers and Thioesters
作者:Torsten Cellnik、Alan R. Healy
DOI:10.1021/acs.joc.2c00330
日期:2022.5.6
A method to synthesize thioethers and thioesters directly from readily available sulfonyl chlorides is reported. We demonstrate that a transient intermediate formed during phosphine-mediated deoxygenation of sulfonyl chlorides can be trapped in situ by activated alcohols or carboxylic acids to effect carbon–sulfurbond formation. The method is operationally simple and tolerates a broad range of functional
A KOH-promoted unusual deoxidative coupling reaction of β-sulfinyl esters with benzylic trimethylammonium salts to produce thioethers is discovered for the first time. If quaternary ammonium salts synthesized from enantiomerically enriched amines are adopted, highlyenantiomerically enriched benzyl thioethers (>95–99% ee) with configurations opposite to those of the enantiomerically enriched amines
describes an environmentally friendly strategy for thiolation and trifluoromethylthiolation of Hantzsch esters. The alkyl radical could be generated smoothly without any photocatalyst via modification of chromophores of alkyl dihydropyridines and wavelength of light. Besides, a broad alkyl dihydropyridine substrate scope and high functional group tolerance are observed. In addition, the modulation of
thioethers was disclosed, driven by PIII/PV═O redox cycling. In this work, one-step dehydroxylative thioetherification of alcohols was fulfilled with various hypervalent organosulfur compounds. This established strategy features an excellent functional group tolerance and broad substrate scope, especially inactivated alcohols. The scale-up reaction and further transformation of the product were also successful
公开了一种由 P III /P V = O 氧化还原循环驱动的无金属和无硫醇的有机磷催化形成硫醚的方法。在这项工作中,利用各种高价有机硫化合物实现了醇的一步脱羟基硫醚化。这种既定策略具有出色的官能团耐受性和广泛的底物范围,尤其是灭活醇。产品的放大反应和进一步转化也取得了成功。此外,该方法提供了一种无保护基且步骤有效的合成过氧化物酶体增殖物激活受体激动剂的方法,该方法在治疗哺乳动物骨质疏松症方面表现出良好的潜力。