An efficient metal-free synthesis of organic disulfides from thiocyanates using poly-ionic resin hydroxide in aqueous medium
摘要:
An efficient and metal-free method is described for the preparation of organic disulfides from alkyl and acyl methyl thiocyanates in the presence of poly-ionic resin hydroxide in aqueous medium. Further extension of this protocol has been tested using two different organyl thiocyanates to prepare unsymmetrical disulfides. (C) 2013 Elsevier Ltd. All rights reserved.
Direct Photocatalytic S–H Bond Cyanation with Green “CN” Source
作者:Wei Guo、Wen Tan、Mingming Zhao、Lvyin Zheng、Kailiang Tao、Deliang Chen、Xiaolin Fan
DOI:10.1021/acs.joc.8b00887
日期:2018.6.15
Herein we report a novel C–S bond cleavage and reconstruction strategy for the synthesis of thiocyanates through direct photocatalytic S–Hbond cyanation from thiols and inorganic thiocyanate salts. In our strategy, the unprecedented example of cutting off C–S bond of SCN– to deliver the green “CN” sources is demonstrated. This transformation features nontoxic and inexpensive “CN” sources, available
2-Chloro-1-methylpyridinium iodide, an efficient reagent for the conversion of alcohols into alkyl thiocyanates both under solvent and solvent-free conditions
作者:Babak Mokhtari、Roya Azadi、Edris Mardani
DOI:10.1016/j.tetlet.2011.11.050
日期:2012.2
reagent for the simple phosphine-free conversion of alcohols into the corresponding alkyl thiocyanates is described. This transformation can be achieved either in acetonitrile or under solvent-free conditions and the products obtained in good to excellent yields. The solvent-free procedure described here is the first report on the solvent-free thiocyanation of alcohols.
The present invention relates to a GPR40 receptor function regulator comprising a fused imidazole compound represented by the formula:
wherein each symbol is as defined in the specification, or a salt thereof or a prodrug thereof. The GPR40 receptor function regulator is useful as an agent for the prophylaxis or treatment of obesity, hyperinsulinemia, type 2 diabetes and the like.
One-Pot Reductive Sulfenylation and Thiocyanation of Carbonyl Compounds in Ionic Liquid Media
作者:Lal Dhar S. Yadav、Garima、Ritu Kapoor
DOI:10.1080/00397910903531854
日期:2010.12.21
The first example of an efficient one-pot reductive sulfenylation and thiocyanation of carbonylcompounds in environmentally benign ionic liquid (IL) media is reported. The process involves reduction of carbonylcompounds with NaBH4 in the IL [bmim]BF4 followed by I2-catalyzed reaction of the resulting alcohols with aromatic / aliphatic thiols or ammonium thiocyanate in the same vessel to afford sulfides
报道了在环境良性离子液体 (IL) 介质中羰基化合物的有效单锅还原性磺基化和硫氰化的第一个例子。该过程包括在 IL [bmim]BF4 中用 NaBH4 还原羰基化合物,然后在同一容器中将所得醇与芳香族/脂肪族硫醇或硫氰酸铵进行 I2 催化反应,分别以极好的收率提供硫化物或硫氰酸盐( 78–93%)。值得注意的是,该协议排除了在单独的步骤中制备和分离中间醇的必要性,因为它们是原位形成的,并且所使用的 IL 可以轻松回收以供进一步使用,而不会降低效率。
AIBN-initiated direct thiocyanation of benzylic sp<sup>3</sup> C–H with <i>N</i>-thiocyanatosaccharin
Direct thiocyanations of benzylic compounds have been implemented. Here, a new strategy, involving a free radical reaction pathway initiated by AIBN, was used to construct the benzylic sp3 C–SCN bond. In this way, the disadvantage of other strategies involving introducing leaving groups in advance to synthesize benzyl thiocyanatecompounds was overcome. The currently developed protocol also involved