| 摘要 |
<p>1367870 Esters of phenyl indan INTERNATIONAL STANDARD ELECTRIC CORP 5 April 1973 [11 April 1972] 16276/73 Heading C2C [Also in Division C3] The invention relates to phenyl indane esters of the general formula in which A, B, C, D, E and F are selected from hydrogen, carboxyallyl and carboxy methallyl radicals and wherein one of A, B and C and one of D, E and F is a carboxyallyl or a carboxymethallyl radical. Particularly preferred compounds are those in which A, C, D and F are hydrogen and B and E are each in which R 1 is hydrogen or methyl. Compounds claimed per se are 1,1,3-trimethyl-5-carboxy-3- (p - carboxyphenyl) indan diallyl ester; 1,1,3- trimethyl - 5 - carboxy - 3 - (p - carboxyphenyl) indan dimethallyl ester; a mixed allyl-methallyl diester of 1,1,3-trimethyl-5-carboxy-3-(pcarboxyphenyl) indan. The compounds may be prepared by reacting a precursor phenyl indan dicarboxylic acid such as a 1,1,3-trimethyl-5- carboxy - 3 - (p - carboxyphenyl) indan - diacid with thionyl chloride to produce the corresponding diacyl chloride and reacting this diacyl chloride with allyl alcohol, methallyl alcohol or a mixture of allyl and methallyl alcohol.</p> |
