Cesium carbonate → HCID 44251417, compound

Participants

Reaction Steps

A mixture of 2,2-dimethyl-3-((R)-2-oxo-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-6-yl)propanenitrile (150 mg, 0.31 mmol), 6-chloropyridazin-3-(2H)-one (62 mg, 0.47 mmol), Pd(Ph3P)2Cl2 (15 mg), and aq. Cs2CO3 solution (2 mL, 2M) in 1,4-dioxane (10 mL) was stirred at reflux for 2 h. When the reaction was finished, the mixture was diluted with water, and extracted with EtOAc. The organic phase was washed with brine, dried over Na2SO4, filtered, and concentrated to give the crude product, which was purified by preparative TLC to give 2,2-dimethyl-3-((R)-2-oxo-3-((S)-1-(4-(6-oxo-1,6-dihydropyridazin-3-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-6-yl)propanenitrile (18.9 mg, 15%). LC-MS Method 2 tR=1.053 min, m/z=457.3; 1H NMR (CDCl3): δ1.16 (s, 3H), 1.25 (s, 3H), 1.38 (d, 3H), 2.21 (s, 2H), 2.24 (m, 1H), 2.40 (m, 2H), 2.86 (m, 1H), 5.61 (m, 1H), 6.86 (m, 2H), 6.95 (m, 1H), 7.29 (m, 5H), 7.32 (m, 2H), 7.56 (m, 1H).

Provenance & Evidence