反应详情

A solution of thiourea (64.7 g, 850 mmol, 1.13 equiv.), sodium methanolate (95%, 40.5 g, 751 mmol, 1.0 equiv.) in methanol (500 mL, 1.5 M) was stirred at room temperature for 30 minutes. A solution of (E)-4-(dimethylamino)-1,1-dimethoxybut-3-en-2-one (1) (130 g, 751 mmol) in methanol (200 mL) was added and the reaction stirred at room temperature for 2 h. The crude sodium 4-(dimethoxymethyl)pyrimidine-2-thiolate (2) was used directly in the next step without further purification. LC-MS m/z 209 (M+1). Reference: WO20060097341A1, pg 67.

1. customThe crude sodium 4-(dimethoxymethyl)pyrimidine-2-thiolate (2) was used directly in the next step without further purification