key intermediate meaning in Chinese
关键中间体
Examples
- The structures of the target molecules and the key intermediates were confirmed by 1h nmr , 13c nmr and ir spectra in our experiments
关键中间体及最终化合物的结构经核磁共振氢谱、碳谱及红外光谱确证。 - Results and conclusion the proportion of the ingredients and the method of the postprocessing had been improved in the process of synthesis of the key intermediate - sulfobenzyl cephalosporin , with the increased yield from 30 % to 42 %
结果与结论通过改进关键中间体7 - （ -磺苯乙酰胺）头孢菌素酸钠合成的投料比与后处理方法，使该步反应产率由30 %提高到42 % 。 - Abstract : 1 - ( 4 - pyridinyl ) - 2 - propanone , which is the key intermediate of synthesizing the milrinone , a cardiotonic agent , was synthesized from 4 - methyl - pyridine by acetylation in dichloromethane and phase transition catalyzing hydrolysis . the overall yield was 73 . 1 %
文摘:报道了以4 -甲基吡啶为原料，经酰化和相转移催化水解反应制备强心药物米利酮关键中间体1 - ( 4 -吡啶基) - 2 -丙酮的新合成方法，总收率达73 . 1 %