反应详情

A solution of the product from step c) (4.6 g, 12.6 mmol) in CH2Cl2 (63 ml) was treated with DMF (3-5 drops) and oxalyl chloride (2.4 g, 18.9 mmol) for 2 hours. Next, the solvent was evaporated in vacuo to give 4.04 g (100%) of the subtitle compound that was used without further purification.

1. customNext, the solvent was evaporated in vacuo