【摘要】 目的 :合成标题化合物 ,并进行工艺改进。方法 :以 2 -戊酮和草酸二乙酯为原料 ,经三步反应合成了产物。结果 :反应的总收率为 4 7.7%。合成的各步产品经元素分析、红外和核磁共振光谱确证。结论 :改进的工艺具有反应温度低、时间短等优点 ,并提高了收率。更多还原

【Abstract】 OBJECTIVE:To synthesize the title compound and improve of the process. METHOD:The title compound was synthesized from methyl n propyl ketone and diethyloxalate via three steps. RESULTS:The total yield was 47.7% on the basis of methyl n proplyl ketone. The quality of the title compound, as judged by element analysis, IR and 1HNMR was proved. CONCLUSION:According to the improved process, the method lowered reaction temperature, shortened the reaction period and increased yield as compared with the technological process reported in literature.更多还原