The reactions of 4-(1,2-dimethylindol-3-yl)butyric acid and of 3-(1,2-dimethylindol-3-yl)propionic acid with trifluoroacetic anhydride
作者:A. Sydney Bailey、J. Hilary Ellis、Josephine M. Peach、Martin L. Pearman
DOI:10.1039/p19830002425
日期:——
Treatment of 4-(1,2-dimethylindol-3-yl)butyric acid (1) with trifluoroacetic anhydride gives either 1-methyl-2-trifluoroacetylmethyleneindoline-3-spirocyclopentan-2′-one (6) or 1,2-dimethyl-6-oxo-3,4,5,6-tetrahydro-1H-cyclohept[c,d]indole (5) depending on the reaction conditions. 3-(1,2-Dimethylindol-3-yl)propionic acid (10;R = OH) reacts with trifluoroacetic anhydride to form 4,4a-dihydro-9-methyl-4a-[2
用三氟乙酸酐处理4-(1,2-二甲基吲哚-3-基)丁酸(1)得到1-甲基-2-三氟乙酰亚甲基吲哚啉-3-螺环戊烷-2'-一(6)或1,2-二甲基-6-氧代-3,4,5,6-四氢-1 H-环庚基[ c,d ]吲哚(5)取决于反应条件。3-(1,2-二甲基吲哚-3-基)丙酸(10; R = OH)与三氟乙酸酐反应形成4,4a-二氢-9-甲基-4a- [2,2,2-三氟-1 -(2-羟基-9-甲基咔唑-3-基)乙基]咔唑-2(3 H)-一(21)。