1H-Indazole-5,6-diamine → 6-(3-fluoro-4-methoxyphenyl)-1H-pyrazolo[3,4-g]quinoxaline 7-(3-fluoro-4-methoxyphenyl)-1H-pyrazolo[3,4-g]quinoxaline

Participants

Reaction Steps

To an ice-cooled mixture of 5,6-diaminoindazole (0.5 g) in 20 ml absolute ethanol is added slowly a solution of 1-methoxy-2-fluoro-4-glyoxyloylbenzene (0.75 g) in 30 ml ethanol. The resulting mixture is stirred at room temperature over night. The solid which forms is filtered off, washed with a small amount of ethanol then with hexane and air dried to give a yellow material.

Provenance & Evidence