Commercially available anhydrous KF without activation or solid support promotes condensation between active methylene compounds, carbon disulfide and an alkylating agent in dry DMF to allow the preparation of a variety of ketene dithioacetals in fair to good yields under ambient conditions.
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水 KF 无需活化或固体载体,可促进活性亚甲基化合物、
二硫化碳和烷基化剂在干燥
DMF 中的缩合,从而在环境条件下以相当到良好的产率制备各种乙
烯酮二硫代缩醛。