反应详情

A benzene solution (25 ml) of crude 3-acetoxy-2,2-dimethyl propionic acid from Example 3(a) (7.4 g, 46.5 mmol), oxalyl chloride (6.45 g, 51 ml) and DMF (2 drops) was stirred at ambient temperature for 3 hours. The pale yellow solution was distilled to provide the title compound as a colorless liquid, b.p.15 85°-88° C. NMR (CDCl3) δ4.18 (2H, s), 2.08 (3H, s), 1.35 (6H, s).

1. distillationThe pale yellow solution was distilled