The “two-fold reaction” benchmark applied to the copper catalyzed assembling of 1ω-difunctional hydrocarbon chains
摘要:
Long-chain hydrocarbons carrying vinyl groups, chlorine atoms or oxygen functions at the terminal positions can be prepared with excellent yields by copper mediated coupling of alkyl tosylates and Grignard reagents. No ''breeding stage'' is necessary if the cuprous complex dilithium trichlorocuprate rather than a cupric salt is employed as the catalyst.
CYCLOPHOSPHAZENE COMPOUND, LUBRICANT COMPRISING SAME, AND MAGNETIC DISK
申请人:MORESCO Corporation
公开号:EP2565198A1
公开(公告)日:2013-03-06
A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound
wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C1-4 fluoroalkyl and Rf is -CF2O(CF2CF2O)x(CF2O)yCF2- or -CF2CF2O(CF2CF2CF2O)zCF2CF2- in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH2-Rf-CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD) of 1.0 to 1.5.