Triethylamine → HCID 178419999, compound

Participants

Reaction Steps

N4-(Trans-3-(quinazolin-2-ylamino)cyclobutyl)pyrimidine-4,5-diamine (0.045 g, 0.146 mmol) and triethylamine (0.50 ml, 3.59 mmol) were dissolved in dry tetrahydrofuran (10 mL) and treated with cyclopropanecarbonyl chloride (0.050 ml, 0.546 mmol). The reaction was stirred at room temperature for 14 hours. The mixture was evaporated to dryness under reduced pressure and the residue dissolved in acetic acid (20 mL). It was sealed in a microwave vessel and heated at 125° C. for 20 minutes then to 145° C. for 1 hour. The solution was evaporated to dryness under reduced pressure. Purification using silica chromatography (0-4% methanol in dichloromethane gradient) gave the desired N-(trans-3-(8-cyclopropyl-9H-purin-9-yl)cyclobutyl)quinazolin-2-amine (0.025 g, 0.070 mmol, 47.8% yield). M+1: 358.1. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.15-1.24 (m, 2 H) 1.24-1.33 (m, 2 H) 2.02-2.12 (m, 1 H) 2.69-2.80 (m, 2 H) 3.68-3.81 (m, 2 H) 4.89 (m, J=7.70, 7.70, 4.10 Hz, 1 H) 5.54 (quin, J=8.36 Hz, 1 H) 5.92 (br. s, 1 H) 7.23-7.35 (m, 1 H) 7.59-7.67 (m, 1 H) 7.67-7.76 (m, 2 H) 8.95 (s, 1 H) 8.91 (s, 1 H) 9.03 (s, 1 H).

Provenance & Evidence