Umwandlung von 6??Methylen??tricyclo [3.2. 1.02, 7] oct??3??en??8??onen mit Ameisensäure in kernmethylierte Phenylessigsäuren
J Peter??Katalinić, J Zsindely…
Index: Peter-Katalinic,J. et al. Helvetica Chimica Acta, 1974 , vol. 57, p. 223 - 266
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Citation Number: 9
Abstract
Abstract In a preceding communication [5] it was shown that 1, 5-dimethyl-6-methylene- tricyclo [3.2. 1.0 2, 7] oct-3-en-8-one (2) and related tricyclic ketones are converted by strong acids (CF 3 COOH, FSO 3 H) into polymethylated tropylium salts with loss of carbon monoxide, eg the 1, 2, 4-trimethyltropylium ion 4 from 2 (Scheme 1).
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