Helvetica Chimica Acta

Intramolekulare Diels??Alder??Additionen in 6??(But??3??enyl)??6??methyl??cyclohexa??2, 4??dien??1??on??Systemen; eine neue Synthese von Twistanderivaten

H Greuter, H Schmid

Index: Greuter,H.; Schmid,H. Helvetica Chimica Acta, 1972 , vol. 55, p. 2382 - 2400

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Citation Number: 23

Abstract

Abstract Alkylation of the sodium salt of mesitol with 2-bromomethyl-buta-1, 3-diene (7) in benzene and subsequent refluxing of the reaction mixture gave 7% 2-methylene-3-butenyl- mesitylether (8), 12% 5-methylene-1, 3, 8-trimethyl-tricyclo [4, 3, 1, 0 3, 7]-8-decen-2-one (9) and 44% 9-methylene-1, 3, 5-trimethyl-tricyclo [4, 4, 0, 0 3, 8]-4-decen-2-one (10), a twistane derivative. The same procedure, when applied to the sodium salt of 2, 6-dimethyl-4- ...