Y. Tominaga, L. Castle, R. Castle
Jul 1, 1996
Citations
0
Influential Citations
5
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Photocyclization of the substituted 2-([1]benzothien-3-yl)-3-phenylpropenoic acids 3a-c in the presence of iodine and air in a benzene-cyclohexane mixture afforded a separable mixture of three compounds, benzo[b]naphtho[2,1-d]thiophene-6-carboxylic acids 4a-c, 6H-benzo[b]naphtho[2,3-d]thiopyran-6-ones 5a-c, and 10-methoxy-2-methyl-6H-benzo[b]naphtho[2,3-d]pyran-6-one (6).