Synthesis and properties of pyrazole carbaldehyde bis(2-hydroxyethyl)-dithioacetal hydrochlorides*
作者:L. K. Papernaya、A. A. Shatrova、A. I. Albanov、E. V. Rudyakova、G. G. Levkovskaya
DOI:10.1007/s10593-012-0927-0
日期:2012.2
water-soluble pyrazole derivatives, namely 4-[bis(2-hydroxyethylsulfanyl)methyl]pyrazoles hydrochlorides, by the reaction of a series of pyrazole carbaldehydes with 2-mercaptoethanol in the presence of trimethylchlorosilane. When treated with aqueous ammonia solution the pyrazole-4-carbaldehydes bis(2-hydroxyethyl)dithioacetal hydro-chlorides are converted to the 4-[bis(2-hydroxyethylsulfanyl)methyl]pyrazole
通过在三甲基氯硅烷存在下一系列吡唑甲醛与2-巯基乙醇的反应,已经开发出一种简单的方法来合成水溶性吡唑衍生物,即4- [双(2-(羟乙基硫烷基)甲基]吡唑盐酸盐。当用氨水溶液处理时,吡唑-4-甲醛双(2-羟乙基)二硫缩醛盐酸盐被转化为4- [双(2-羟乙基硫烷基)甲基]吡唑游离碱。