| abstract |
NEW MATERIAL:A compound of formula I {a and b are each number satisfying the relationships: 1≤a≤3, 0.001≤b≤2; R 1 is 1-30C monovalent hydrocarbon group; R 2 is monovalent organic group of formula II [R 3 is H or 1-5C monovalent saturated hydrocarbon group; R 4 is of formula III or formula IV (R 5 is H or hydroxyl; R 6 is H or 1-10C monovalent hydrocarbon group; c is 0-3; d is 0-4)]}. n EXAMPLE: A compound of formula V. n USE: A formulating agent for medicines or cosmetics and an additive for polishes. n PREPARATION: The phenolic site of a benzophenone compound (for the phenolic OHs, one of them at ortho- and para-sites is unsubstituted) such as 2- hydroxybenzophenone is allyl etherified under a basic condition followed by making a thermal rearrangement into an allyl derivative, which is then put to addition reaction with e.g. an organohydrogensilane in the presence of a catalyst such as a platinum compound, thus producing the objective compound of the formula I. n COPYRIGHT: (C)1991,JPO&Japio |