反应详情

Ethyl 4-chloroacetoacetate (7.5 mL, 51.9 mmol), 2-methyl-2-propanethiol (5.6 mL, 49.7 mmol), triethylamine (10.8 mL, 77.4 mmol), and catalytic tetrabutylammonium bromide were dissolved in THF (250 mL) and stirred at room temperature overnight. Silica gel was added, and the mixture was concentrated and filtered over a plug of silica gel to obtain the desired product (B-1), which was used without further purification.

1. additionSilica gel was added
2. concentrationthe mixture was concentrated
3. filtrationfiltered over a plug of silica gel