Cyclodehydrogenation of 3-Cinnamoyltropolones with 2,3-Dichloro-5,6-dicyanobenzoquinone
作者:Kimiaki Imafuku、Kazuko Yamaguchi
DOI:10.1246/bcsj.54.2855
日期:1981.9
3-Cinnamoyltropolone and 3-(3-methoxycinnamoyl)tropolone were oxidized with 2,3-dichloro-5,6-dicyanobenzoquinone to give 2-phenyl- and 2-(3-methoxyphenyl)-4,9-dihydrocyclohepta[b]pyran-4,9-diones, while 2′-and/or 4′-methoxy-substituted 3-cinnamoyltropolones gave 2-arylmethylene-2H-3,8-dihydrocyclohepta[b]furan-3,8-diones.
3-肉桂酰托酚酮和 3-(3-甲氧基肉桂酰) 托酚酮用 2,3-二氯-5,6-二氰基苯醌氧化得到 2-苯基-和 2-(3-甲氧基苯基)-4,9-二氢环庚 [b] 吡喃-4,9-二酮,而 2'-和/或 4'-甲氧基取代的 3-肉桂酰基托罗酮生成 2-芳基亚甲基-2H-3,8-二氢环庚 [b] 呋喃-3,8-二酮。