Process for preparing unsaturated esters containing cyclic epoxy group
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United States of America Patent
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Sep 26, 2000
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N/A
app pub date -
Dec 23, 1996
filing date -
Dec 23, 1996
priority date (Note) -
Expired
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Abstract
Process of making compounds of the formula ##STR1## wherein R.sub.1 =(C.sub.1 -C.sub.6) alkyl; X=O, S, NH; R.sub.2 =divalent saturated organic group; Y=O, S, NH, ester; R.sub.3 =cyclic moiety containing oxirane group; comprising reacting a compound of the formula ##STR2## wherein R.sub.4 is a cyclic moiety containing C.dbd.C group with hydrogen peroxide in the presence of (a) tungstic acid, (b) phosphoric acid or its metal salts, and (c) at least one phase transfer catalyst; polymers of compounds of formula I; and compounds of formula I except for compounds wherein R.sub.4 is a dicyclopentenyl epoxide, Y is O, R.sub.2 is --CH.sub.2 CH.sub.2 --, X is O, and R.sub.1 is H or methyl.
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