Morpholine → 4-(2-Bromo-3-methylbenzoyl)morpholine

Beteiligte Stoffe

Reaktionsschritte

A solution of 2-bromo-3-methylbenzoic acid (2.19 g, 10.18 mmol) in THF (20.37 mL) was treated with N,N′-carbonyldiimidazole (1.98 g, 12.2 mmol). The reaction mixture was stirred at ambient temperature overnight (14 h). Morpholine (3.11 mL, 35.6 mmol) was added in one portion. The resulting solution was stirred for 8 h and then partitioned between EtOAc and water. Organic layer washed with water, dilute HCl, saturated aqueous Na2CO3, water and brine. The solution was then concentrated in vacuo to afford (2-bromo-3-methylphenyl)(morpholino)methanone as a white crystalline solid.

Herkunft & Nachweise