Brønsted Acid-Assisted Zinc-Catalyzed Markovnikov-Type Hydrothiolation of Alkenes Using Thiols
作者:Nobukazu Taniguchi
DOI:10.1021/acs.joc.0c00487
日期:2020.5.15
hydrothiolation of alkenes with thiols was achieved in the presence of 4-toluenesulfonic acid. Through this procedure, Markovnikov-type sulfides were synthesized in excellent yields, and the formation of anti-Markovnikov-type sulfides was suppressed. Furthermore, the combination of numerous aryl alkenes with arenethiols or alkyl thiols was achieved using the procedure.
Palladium-Catalyzed SN1 Reactions of Secondary Benzylic Alcohols: Etherification, Amination, and Thioetherification
作者:Kimberly J. Miller、Mahdi M. Abu-Omar
DOI:10.1002/ejoc.200390185
日期:2003.3
The reaction of various secondarybenzylicalcohols in the presence of PdII catalysts provides ethers in good to high yields. Unsymmetric ethers could also be obtained with good selectivity by coupling two different alcohols. Direct amination is observed with electron-deficient anilines, and thioethers are prepared conveniently in high yields by the direct action of thiols on sec-phenylethyl alcohol
Highly Efficient and Chemoselective Tertiary and Secondary Benzylation of Thiols Catalyzed by Indium(III) Triflate
作者:Krzysztof Kuciński、Grzegorz Hreczycho
DOI:10.1002/ejoc.201701007
日期:2017.10.10
We have developed a highly efficient method for the chemoselective nucleophilicsubstitution of tertiary and secondary benzylic alcohols with aliphatic and aromatic thiols in the presence of catalytic amounts of indium(III) triflate under mild conditions. A broad range of unsymmetrical sulfides were synthesized in excellent isolated yields (89–99 %) by using this approach.
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。
A NEW SYNTHESIS OF SULFIDES FROM THIOLS AND ALDEHYDES OR KETONES WITH PYRIDINE-BORANE IN TRIFLUOROACETIC ACID
作者:Yasuo Kikugawa
DOI:10.1246/cl.1981.1157
日期:1981.8.5
A mixture of thiols and aldehydes or ketones was converted into sulfides with pyridine-borane in trifluoroacetic acid.