Methanol → HCID 178515075, compound

Participants

Reaction Conditions

Reaction Steps

7-Chloro-4-hydroxy-2-(4-methoxyphenyl)-1,2,5,10-tetrahydropyridazino[4,5-b]quinoline-1,10-dione (0.800 g, 2.16 mM) was stirred in methanesulfonic acid (16 mL) to give an amber solution. This solution was heated to 150° C. for 6 hours and cooled to room temperature. Addition of ethyl ether (250 mL) and methanol (50 mL) gave a tan precipitate. The solid was collected and washed with methanol/ether to give the title compound (0.530 g, 51%) as a tan powder, mp 316-318° C.; MS(CI): 356 (M+H).

Provenance & Evidence