Odourless Strategy for Deep Eutectic Solvent-Mediated Ring Opening of Epoxides with In Situ Generated S-Alkylisothiouronium Salts
摘要:
A general, straightforward and odourless ring-opening reaction allows the preparation of beta-hydroxy sulfides from in situ generated S-alkylisothiouronium salts in urea-choline chloride-based deep eutectic solvent (DES). In addition, reaction of epoxides with thiourea in DES yields the corresponding thiiranes.
Rapid, benign, and additive-free thiolysis of epoxides under ultrasonic/aqueous conditions
作者:Mohammad M. Mojtahedi、Sajad Khalili
DOI:10.1080/17415993.2014.909814
日期:2014.7.4
An environmentally friendly and efficient procedure is developed for ring opening of various epoxides with thiols under non-thermal conditions. Reactions take place by ultrasonic irradiation of the two reactants suspended in an additive-free aqueous medium. Consequently, high-yield formation of various beta-hydroxy sulfides is quickly observed.[GRAPHICS].