Triethylamine → (1aR,5aR)-2-(6-Chloropyridazin-3-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic Acid (2-Hydroxy-1,1-dimethyl-ethyl)-amide

Participants

Reaction Conditions

Reaction Steps

To a solution of a 4:1 mixture of (1aR,5aR)-2-(6-chloropyridazin-3-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid and (1aR,5aR)-2-(6-methoxypyridazin-3-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid (100 mg, 0.361 mmol), 2-amino-2-methylpropan-1-ol (32.2 mg, 0.361 mmol), and triethylamine (0.101 mL, 0.723 mmol) in DMF (2 mL) was added HATU (151 mg, 0.398 mmol). The reaction was stirred at 23° C. for 3 h then concentrated. The residue was purified by HPLC to provide the title compound (73 mg) as a white solid. LCMS m/z=348.4 [M+H]+; 1H NMR (400 MHz, CDCl3) δ ppm 0.47 (td, J=4.6, 3.3 Hz, 1H), 1.29 (td, J=7.9, 4.9 Hz, 1H), 1.41 (s, 3H), 1.42 (s, 3H), 2.30-2.36 (m, 1H), 2.88-2.94 (m, 2H), 3.01 (dd, J=16.4, 6.2 Hz, 1H), 3.72 (s, 2H), 3.84 (bs, 1H), 6.88 (s, 1H), 7.61 (d, J=9.1 Hz, 1H), 8.12 (d, J=9.2 Hz, 1H).

Provenance & Evidence