Niederpruem,H. et al., Justus Liebigs Annalen der Chemie, 1973, p. 20 - 32
作者:Niederpruem,H. et al.
DOI:——
日期:——
Niederpruem, H.; Voss, P.; Beyl, V., Liebigs Annalen der Chemie
作者:Niederpruem, H.、Voss, P.、Beyl, V.
DOI:——
日期:——
Alkyl trimethylsiloxybenzoat compounds and method of preparation
申请人:Clariant Life Science Molecules (Florida) Inc.
公开号:EP1205482A3
公开(公告)日:2003-04-02
The invention provides high purity fluid alkyl triorgansiloxybenzoates of the general formula R'3SiO-C6H4-COOR wherein R' is a monovalent aliphatic hydrocarbon substituent with 1 to about 6 carbons or a monovalent aromatic hydrocarbon substituent, -C6H4- is a disubstituted aromatic ring, and R is a monovalent aliphatic hydrocarbon substituent with from 1 to about 20 carbons, wherein the alkyl triorganosiloxybenzoates are produced by a novel process, and can be readily incorporated into cosmetic formulations containing organic components with heating and provide preservative properties in said cosmetic formulations comparable to those provided by their precursor solid alkyl hydroxybenzoates.
we report a facile synthesis of 2-chloro-1,3-bis(2,6-diisopropylphenyl)imidazolium salts in aqueous media under ambient conditions using hypochlorite as a chlorinating agent. In addition, an air-stable and moisture-insensitive deoxyfluorination reagent based on poly[hydrogen fluoride] salt is presented, which is capable of converting electron-deficient phenols or aryl silylethers into the corresponding