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METHOD FOR THE PRODUCTION OF VINYL-ARENES, -HETEROARENES AND 1,3-DIENES FROM ARYL-, HETEROARYL- OR VINYL-CARBOXYLIC ACID DERIVATIVES
METHOD FOR THE PRODUCTION OF VINYL-ARENES, -HETEROARENES AND 1,3-DIENES FROM ARYL-, HETEROARYL- OR VINYL-CARBOXYLIC ACID DERIVATIVES
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机译:从芳基,杂芳基或乙烯基羧酸衍生物生产乙烯基-芳烃,-杂芳烃和1,3-二烯的方法
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摘要
The invention relates to a method for the production of vinyl-arenes, -heteroarenes and 1,3-dienes by Heck olefination of carboxylate esters, thioesters or amides with olefins and the elimination of carbon monoxide, in the presence of a transition metal catalyst. The carboxylate derivatives can be optionally applied in isolated form or generated in the reaction mixture from carboxylic acids. Said method permits the simple preparation of a number of valuable olefins from easily produced and handled carboxylate derivatives. The alcohols, thiols or amines produced as by-products can be converted again into carboxylate esters, thioesters or amides, by conventional methods with carboxylic acids and thus recycled.
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