中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-acetyl-2-(4,6-dimethoxyphenylamino)-1-phenylethanone | 1046806-74-9 | C18H19NO4 | 313.353 |
Syntheses are described for nine new 4,6-dimethoxyindoles, incorporating phenyl, pyridin-2-yl, methoxycarbonyl , carboxy and methyl groups in the 2- and/or 3-positions.
Cyclization of the amino ketones (3a,b) derived from 3,5- dimethoxyaniline, and phenacyl bromide and 4-bromophenacyl bromide respectively, afforded 2-arylindoles (8a,b) in preference to 3-aryl- indoles(7). The 3-(4'-bromophenyl)indole (7b) was also isolated in the presence of polyphosphoric acid, but not when amine hydrochloride catalysis was employed. The structure of 2-(4'-bromophenyl)-4,6- dimethoxyindole (8b) was confirmed by X-ray diffraction studies.