Water → HCID 59156565, compound

Participants

Reaction Steps

Sodium hydride (60% dispersion, 0.10 g, 2.6 mmol) and 15-crown-5 (0.038 g, 0.17 mmol) were added to THF (5 mL) at 0° C. and stirred for 5 min. To the reaction mixture was then added dropwise over 5 min a solution of diethyl (4-nitrobenzyl)phosphonate (0.52 g, 1.9 mmol) in THF (5 mL), and stirring was continued at 0° C. for 5 min. To this reaction mixture was then added dropwise over 10 min a solution of 74b (0.47 g, 1.7 mmol) in THF (10 mL). The reaction mixture was stirred for 30 min at 0° C. then for 90 min at RT. Water was carefully added, and the mixture was partitioned between water and EtOAc. The EtOAc layer was washed sequentially with water and brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified by SiO2 chromatography eluting with EtOAc/hexane to afford 0.67 g (94%) of 5-bromo-2-methoxy-1-(1-methylcyclopropyl)-3-[(E)-2-(4-nitrophenyl)vinyl]benzene (75) as a yellow solid (0.67 g, 94%).

Provenance & Evidence