Diisopropylethylamine → (R)-2-amino-4-(4-methylpiperazin-1-yl)-N-[1-(naphthalen-2-yl)ethyl]quinazoline-7-carboxamide

Participants

Reaction Steps

N,N,N′,N′-Tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (40 mg, 0.1 mmol) was added to a solution of 2-amino-4-(4-methylpiperazin-1-yl)quinazoline-7-carboxylic acid (20 mg, 0.07 mmol) in N,N-dimethylformamide (1 mL) and N,N-diisopropylethylamine (24 μL, 0.14 mmol). The reaction mixture was stirred for 10 minutes, and then (1R)-1-(2-naphthyl)ethanamine (24 mg, 0.14 mmol) was added. The crude reaction mixture stirred for 18 h. at r.t. and then was purified on RP-HPLC (pH=2) to afford the title product (15 mg, 27%) as a TFA salt as an off white amorphous solid. 1H NMR (300 MHz, DMSO): δ 1.52 (d, 3H), 2.82 (s, 3H), 3.22 (m, 2H), 3.65 (m, 4H), 4.65 (m, 2H), 5.32 (m, 1H), 7.44 (m, 2H), 7.54 (dd, 1H), 7.76-7.86 (m, 5H), 7.92 (d, 1H), 8.02 (d, 1H); Analytic LCMS (M+H)+: m/z=441.2.

Provenance & Evidence