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    • 2. 发明授权
    • Process for the preparation of mercaptoalcohols
    • 巯基醇的制备方法
    • US4985586A
    • 1991-01-15
    • US462987
    • 1990-01-10
    • Emmanuel ArretzPatrick AugeAlfred MirassouClaude Landoussy
    • Emmanuel ArretzPatrick AugeAlfred MirassouClaude Landoussy
    • B01J31/02B01J31/00C07B61/00C07C67/00C07C313/00C07C319/02C07C319/08C07C323/12C07C323/13C07C323/15C07C323/16C07C323/20C07C323/56C07C323/62C07C331/00
    • C07C319/02
    • This invention relates to improvement to a process for the preparation of mercaptoalcohols containing, more particularly, up to 24 carbon atoms and, preferably, more than 3 carbon atoms, by reaction of the corresponding vicinal epoxides with hydrogen sulphide.The process comprises incorporating into the reaction mixture a catalyst comprising a guanidine and/or of organic derivatives of a guanidine, and/or of guanidine salts, in particular of guanidine salts. The catalyst can be either in liquid and/or solid form, depending on the nature of the catalyst and its solubility in the reaction mixture, or fixed and/or impregnated into various solid materials. The materials can be organic in nature such as neutral and/or basic polymer resins, polymers or copolymers, or can be inorganic in nature such as alumninas, silicas, aluminosilicates, zeolites, active charcoals, oxides and/or metal salts.This process enables mercaptoalcohols to be obtained in a high overall yield while permitting relatively short reaction times.
    • 本发明涉及通过相应的邻位环氧化物与硫化氢的反应来改进含有更特别地至多24个碳原子,优选多于3个碳原子的巯基醇的制备方法。 该方法包括向反应混合物中加入包含胍和/或胍的有机衍生物和/或胍盐,特别是胍盐的催化剂。 催化剂可以是液体和/或固体形式,这取决于催化剂的性质及其在反应混合物中的溶解性,或固定和/或浸渍到各种固体材料中。 这些材料本质上可以是有机的,例如中性和/或碱性聚合物树脂,聚合物或共聚物,或者在本质上可以是无机的,例如校准子,二氧化硅,铝硅酸盐,沸石,活性炭,氧化物和/或金属盐。 该方法能够以高的总产率获得巯基醇,同时允许相对较短的反应时间。