申请人:The Dow Chemical Company
公开号:US04016225A1
公开(公告)日:1977-04-05
Mixtures of (1) a quaternary ammonium salt(s) and (2) 1,4-diazabicyclo[2.2.2]octane are novel catalysts in the process of reacting an alkali metal phenate, pyridinate or pyrimidiate with an O,O-dialkyl phosphorochloridothioate or O-alkyl phenylphosphonochloridothioate to produce the corresponding phosphorothioates and phenylphosphonothioates. The process is conducted under alkaline conditions in a liquid reaction medium. As an example, O,O-diethyl 0-(3,5,6-trichloro-2-pyridyl)phosphorothioate is prepared in excellent yields and purity by reacting sodium 3,5,6-trichloropyridinate with O,O-diethyl phosphorochloridothioate in a stirred methylene chloride-water reaction medium in the presence of a catalytic amount of benzyltriethylammonium chloride and 1,4-diazabicyclo[2.2.2]octane.
混合物(1)季铵盐和(2)1,4-二氮杂双环[2.2.2]辛烷是在碱性条件下,在液态反应介质中反应碱金属苯酚盐,吡啶盐或嘧啶盐与O,O-二烷基磷酰氯硫代酸酯或O-烷基苯基膦酸氯硫代酸酯以产生相应的磷酸硫代酯和苯基膦酸硫代酯的新型催化剂。例如,通过在搅拌的氯甲烷-水反应介质中,在苄基三乙基铵氯和1,4-二氮杂双环[2.2.2]辛烷的催化下,将三氯吡啶钠与O,O-二乙基磷酰氯硫代酸酯反应,可以制备出优良的产率和纯度的O,O-二乙基0-(3,5,6-三氯-2-吡啶基)磷酸硫代酯。