Method for preparing dicyclohexyl phosphinic acid

• Main Authors: HE MINGLIAN, LIU LIANGBIN, PU DONGQIN, MIN CHENGYONG, XIE LIN
• Format: Patent
• Language: Chinese; English
• Published: 02.10.2018
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention discloses a method for preparing dicyclohexyl phosphinic acid. The method is characterized by synthesizing dicyclopentyl phosphinic acid by taking sodium hypophosphite monohydrate and olefin as main raw materials, acetic acid as a solvent and di-tert-butyl peroxide as an initiator and utilizing a small amount of industrial mixed decene. According to the method for preparing dicyclohexyl phosphinic acid, disclosed by the invention, a small amount of mixed decene is added, so that the reaction speed is greatly quickened, the yield is increased to 92 percent or above, and the influence of a monosubstituted byproduct is basically removed except a small amount (smaller than 5 percent) of the monosubstituted byproduct is generated during reaction of a part of olefin; the method issimple in steps and higher in yield; a product of the invention is applied to industries of water quality detection and sewage treatment. 本发明公开了种制备二环己基次膦酸的方法，以水合次亚磷酸钠和烯烃为主要原料，乙酸为溶剂，二叔丁基过氧化物为引发剂，少量工业混合癸烯合成二环戊基次膦酸；本发明的制备方法加入少量混