construction of carbon–sulfur bonds has been achieved via halogen-free Cs2CO3-promoted cross dehydrogenative coupling (CDC) of thiophenols with acetonitrile. This transformation provides a straightforward route to the synthesis of sulfenylated acetonitriles in up to 80% yield.
通过无卤的Cs 2 CO 3促进的硫酚与乙腈的交叉脱氢偶联(CDC),实现了构建碳-硫键的新方法。这种转化为亚磺酰化乙腈的合成提供了一条简单的途径,产率高达80%。
Synthesis of α-aryl sulfides by deaminative coupling of α-amino compounds with thiophenols
作者:Xuejing Yang、Qiang Teng、Feifei Cao、Jianfeng Hu、Hao Zhang、Yong Yang
DOI:10.1039/d3ob00345k
日期:——
By the deaminativecoupling reaction of α-aminoesters and α-aminoacetonitriles with thiols, a new strategy for the synthesis of α-thioaryl esters and nitriles is described, representing an example of converting C(sp3)–N into C(sp3)–S bonds. The substrates form diazo compounds in situ in the presence of NaNO2, and then a transition-metal-free S–H bond insertion reaction occurs with thiophenol derivatives
The present invention provides compounds of formula (I) (Formula (I)) and pharmaceutically acceptable salts thereof, wherein Q, X % X4, X5 X6, X7, R1, R2, R3 and R8 are as defined in the specification, processes for the preparation of such compounds, pharmaceutical compositions containing them and the use of such compounds in therapy.
Use of (Z)-β-(2-Fluorobenzenesulfonyl)vinylamines as Novel Synthons in the Synthesis of 1,4-Benzothiazine Derivatives
作者:Mark Lautens、Gavin Tsui、Yuttapong Singjunla
DOI:10.1055/s-0031-1289741
日期:2012.5
A novel synthetic route for arylated 1,4-benzothiazine derivatives has been developed. This method utilizes a key intramolecular nucleophilic aromatic substitution step of the corresponding (Z)-beta-(2-fluorobenzenesulfonyl) vinylamine intermediate to construct the benzothiazine ring. A wide range of aryl and heteroaryl substituent groups can be installed from commercial boronic acids. Both mono-and diarylated products have been synthesized in good yields and with good functional group tolerance.