M. Tsukayama
Apr 2, 1974
Citations
0
Influential Citations
5
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
7,8-Dimethoxy-2,2-dimethylchroman was obtained from pyrogallol trimethyl ether and β,β-dimethylacrylyl chloride via the corresponding chroman-4-one. The Friedel-Crafts reaction of the chroman with acetyl chloride yielded 6-acetyl-7-hydroxy-8-methoxy-2,2-dimethylchroman. The dehydrogenation of the acetylchroman with DDQ in anhydrous benzene afforded ripariochromene A. Ripariochromene A was converted into methylripariochromene A