NOVEL REACTION OF 2-METHYLENEBENZOTHIAZOLINES WITH 3-(2, 3-DIPHENYL-2-CYCLOPROPENYLIDENE)PENTANE-2,4-DIONE: FORMATION OF 3a,9-DIHYDROCYCLOPENTA[<i>b</i>] [1,4]BENZOTHIAZINES
作者:Otohlko Tsuge、Minorus Tanaka、Hiroshi Shimoharada、Shuji Kanemasa
DOI:10.1246/cl.1982.1353
日期:1982.9.5
Reactions of 3-substituted 2-methylenebenzothiazolines, generated in situ from the corresponding 2-methylbenzothiazolium salts and triethylamine, with 3-(2,3-diphenyl-2-cyclopropenylidene)pentane-2,4-dione give 3a,9-dihydrocyclopenta[b][1,4]benzothiazine derivatives.
由相应的
2-甲基苯并噻唑鎓盐和
三乙胺原位生成的 3-取代 2-亚
甲基苯并噻唑与 3-(2,3
-二苯基-2-环
丙烯亚基)
戊烷-
2,4-二
酮反应生成 3a,9-二
氢环戊并[b][1,4]
苯并
噻嗪衍
生物。