会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 18. 发明授权
    • Process for the preparation of vicinal diols soluble in water
    • 制备可溶于水的连位二醇的方法
    • US4562299A
    • 1985-12-31
    • US680833
    • 1984-12-12
    • Carlo VenturelloMario Gambaro
    • Carlo VenturelloMario Gambaro
    • B01J31/00B01J31/02C07B31/00C07B41/02C07B61/00C07C27/00C07C29/03C07C31/20C07C31/27C07C31/42C07C33/26C07C35/14C07C67/00
    • C07C29/03C07B2200/09C07C2101/08C07C2101/14C07C2101/18
    • A process for the preparation of water-soluble vicinal diols by means of a direct catalytic hydroxylation of the corresponding olefines with H.sub.2 O.sub.2. An olefine possibly carrying functional groups inert under the reaction conditions, and whose corresponding vicinal diol is soluble in water, is made to react, under vigorous stirring, with H.sub.2 O.sub.2 at a temperature between 0.degree. and 120.degree. C. and at a pressure between 1 and 100 atmospheres, in a two-phase aqueous liquid/organic liquid system consisting or consisting essentially of an acid aqueous phase containing H.sub.2 O.sub.2 and of an organic phase containing (1) said olefine; (2) possibly a solvent immiscible with the aqueous phase; and (3) a catalyst of the formula:Q.sub.3 XW.sub.4 O.sub.24-2nwherein Q represents an onium (RR.sub.1 R.sub.2 R.sub.3 M).sup.+ cation, wherein M is chosen from among N, P, As and Sb, and R, R.sub.1, R.sub.2 and R.sub.3, equal to or different from each other, represent hydrogen atoms or hydrocarbon groups having a total of from 20 to 70 carbon atoms; X is an atom of P or As; and n is an integer chosen from among 0, 1 and 2.
    • 通过相应的烯烃与H 2 O 2的直接催化羟基化制备水溶性连二醇的方法。 在剧烈搅拌下,在0〜120℃的温度和0〜120℃之间的压力下,将可能携带在反应条件下为惰性的官能团的烯烃及其相应的邻位二醇溶于水,使其反应 在包含H 2 O 2的酸性水相和含有(1)所述烯烃的有机相中或基本上组成的两相含水液体/有机液体体系中, (2)可能是与水相不混溶的溶剂; 和(3)下式的催化剂:Q3XW4O24-2n其中Q表示鎓(RR1R2R3M)+阳离子,其中M选自N,P,As和Sb,R,R1,R2和R3等于或 彼此不同,表示总共具有20至70个碳原子的氢原子或烃基; X是P或As的原子; 并且n是从0,1和2中选择的整数。