反应详情

A 40 wt % solution of tetrabutylammonium hydroxide in water (250 mL, 99 g, 382 mmol), water (300 mL) and isobutyric acid (33.8 g, 382 mmol) was stirred at ambient temperature for 30 min. The solvent was removed in vacuo to afford the title compound (5) as a waxy solid, which was used without further purification.

1. customThe solvent was removed in vacuo