| 摘要 |
K-18466/A Improved process for the preparation of glycidyl ethers An improved process for the preparation of glycidyl ethers of formula I (I), wherein Q is an aliphatic, cycloaliphatic or araliphatic radical of valency m, R is -H or -CH3, and m is an integer from 1 to 10, by reacting an alcohol of formula Q-(OH)m with m mol of an epihalohydrin of formula II (II) in the presence of a catalyst to the corresponding halohydrin ether, and dehydrohalogenating said halohydrin ether with an alkali metal hydroxide to give a compound of formula I, wherein Q, m and R are as defined above and Hal is halogen, which process comprises using as catalyst a) tin difluoride or b) a divalent tin halide in conjunction with a co-catalyst.
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