acetophenone的例句（acetophenone在句子中的用法）

• The that sulfamic acid is an excellent catalyst for synthesis of acetophenone cyclic ethylic ketal. 以氨基磺酸为催化剂,通过苯乙酮和乙二醇反应合成苯乙酮环乙二缩酮.
• Methods: α - Bromo - 4 - benzyloxy acetophenone is synthesized with 4 - hydroxy acetophenone and bromonium as materials and methanol as solvent. 方法: 以甲醇为溶剂,以对羟基苯乙酮和溴为原料制备了α - 溴-4-苄氧苯基苯乙酮.
• Objective: A new approach to prepare α - bromo - 4 - benzyloxy acetophenone was introduced. 目的: 报道一种合成α - 溴-4-苄氧苯基乙酮的新方法.
• Thus , this reduced temperature of reaction and increased the rate of acetophenone. 降低反应温度,提高了苯乙酮的收率.