Propiolic Acid → HCID 86721738, compound

Participants

Reaction Steps

In a microwave vial containing N-(2-Aza-spiro[3.3]hept-6-yl)-5-(4-phenoxy-phenyl)-pyrimidine-4,6-diamine hydrochloride (80.00 mg; 0.20 mmol; 1.00 eq.) in DCM (1.00 ml) was added DIPEA (0.16 ml; 0.98 mmol; 5.00 eq.) and propiolic acid (24.20 μl; 0.39 mmol; 2.00 eq.) followed by 2,4,6-Tripropyl-[1,3,5,2,4,6]trioxatriphosphinane 2,4,6-trioxide (0.12 ml; 0.29 mmol; 1.50 eq.). The reaction was stirred at rt for 1 h before it was concentrated and purified by preparative HPLC (0.1% TFA-H2O/ACN). Fractions containing the desired product were combined and lyophilized overnight to afford 1-(6-((6-amino-5-(4-phenoxyphenyl)pyrimidin-4-yl)amino)-2-azaspiro[3.3]heptan-2-yl)prop-2-yn-1-one as a white solid (27.8 mg, 26.1%). HPLC purity: 99%. MS: m/z=426 [M+H]+. 1H NMR (CD3OD) δ 8.25 (s, 1H), 7.18-7.49 (m, 9H), 4.32 (d, 1H), 4.09 (d, 2H), 3.89 (d, 1H), 2.60 (m, 2H), 2.29 (m, 2H).

Provenance & Evidence