中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
N-苯基香豆甲酯 | N-phenyl methyl carbamate | 2603-10-3 | C8H9NO2 | 151.165 |
甜菜宁 | Phenmedipham | 13684-63-4 | C16H16N2O4 | 300.314 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-(methoxycarbonyl)-3-<(methoxymethyl)oxy>aniline | 136247-91-1 | C10H13NO4 | 211.218 |
—— | phenmediphame | 19961-72-9 | C15H14N2O4 | 286.287 |
甜菜安 | desmedipham | 13684-56-5 | C16H16N2O4 | 300.314 |
苯基氨基甲酸 | N-phenylcarbamic acid | 501-82-6 | C7H7NO2 | 137.138 |
—— | [3-(methoxycarbonylamino)phenyl] N-(3-fluorophenyl)carbamate | 23122-47-6 | C15H13FN2O4 | 304.278 |
甜菜宁 | Phenmedipham | 13684-63-4 | C16H16N2O4 | 300.314 |
A synthesis of 4-methylpyrano[2,3-e]indole-2,8,9-trione (5) is achieved from 7-amino-4- methylcoumarin by adopting the classical Sandmeyer methodology. The cyclocondensation reaction of pyrano-isatin 5 with the appropriately substituted o-phenylenediamines 6 in polyphosphoric acid proceeded regioselectively to furnish the respective pyrano[2’,3’:4,5]indolo[2,3-b]quinoxalines 7a - c. Structural assignments of the new compounds are based on microanalytical and spectral (IR, MS and NMR) data.
Unstable neutral radicals [ROCONHOU.]