Diisopropylethylamine → HCID 178491635, compound

Participants

Reaction Steps

To a solution of the product of Step B (0.25 g; 1.43 mmol), and the product of Step C (0.23 g; 1.31 mmol) in anhydrous THF (5 ml), PyBroP (0.67 g; 1.44 mmol) was added followed by DIPEA (0.57 ml; 3.3 mmol), with stirring, at room temperature under N2. After 1 h of stirring, the mixture was diluted to 20 ml with EtOAc, washed with saturated NH4Cl (5 ml), brine, dried over anhydrous MgSO4 and filtered. The filtrate was evaporated to dryness under reduced pressure and the residue was purified by crystallization from EtOAc/hexane to give the title compound (0.42 g; 93%), as a creamy solid. 1H-NMR (CD3OD) 3.96 (s, 3H); 5.41 (s, 1H); 6.52 (d, 1H, J=3.2 Hz); 7.14 (d, 1H, J=8.7 Hz); 7.27 (d, 1H, J=3.2 Hz); 7.41-7.77 (m, 2H); 8.0 (s, 1H); 8.11 (dd, 1H, J=2; 8.7 Hz); 8.15 (d, 1H, J=2 Hz).

Provenance & Evidence