作者:Yoshinori Tominaga、Lyle W. Castle、Raymond N. Castle
DOI:10.1002/jhet.5570330452
日期:1996.7
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).
在苯和环己烷混合物中,在碘和空气存在下,将取代的2-([1]苯并噻吩-3-基)-3-苯基丙酸3a-c光环化,得到三种化合物苯并[ b ]萘的可分离混合物[2,1 - d ]噻吩-6-羧酸4a-c,6 H-苯并[ b ]萘并[2,3 - d ]噻喃-6-酮5a-c和10-甲氧基-2-甲基- 6 H-苯并[ b ]萘并[2,3 - d ]吡喃-6-一(6)。