Lithium Hydroxide → 2-Amino-4-(4-methylpiperazin-1-yl)quinazoline-7-carboxylic acid

Participants

Reaction Steps

Lithium hydroxide (29 mg, 1.2 mmol) in water (1 mL) was added to a solution of methyl 2-amino-4-(4-methylpiperazin-1-yl)quinazoline-7-carboxylate (180 mg, 0.60 mmol) in methanol (2 mL) at room temperature. The starting material was consumed after stirring for 5 h, and the reaction mixture was concentrated and dried on lyophilizer to obtain the crude product (190 mg) as an amorphous white solid. (quantitative yield). 1H NMR (300 MHz, DMSO): δ 2.22 (s, 3H), 2.48 (m, 4H), 3.49 (m, 4H), 6.23 (b, 2H), 7.55 (M, 2H), 7.75 (d, 1H); Analytic LCMS (M+H)+: m/z=288.1.

Provenance & Evidence