The 1,5-diazabicyclo[4.3.0]non-5-ene (DBN)-catalyzed regioselective acylation of carbohydrates and diols in ethyl ac......

在无溶剂条件下用乙酸乙酯和水合肼反应制备乙酰肼，探讨了乙酸乙酯的浓度，反应温度对收率的影响。反应时间由７０ｈ减少到７ｈ。......