反应详情

The product from Example 34b (4.0 g, 13.6 mmol) in 40 mL of CH2Cl2 was treated with oxalyl chloride (3.5 g, 27.2 mmol) and DMF (catalytic amount). Mixture was stirred for 12 hours. Mixture was concentrated under vacuum giving the title compound as a yellow oil (4.2 g, 100%).

1. concentrationMixture was concentrated under vacuum