rac-2-{[6-Chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperidin-4-yl-amino}-N-cyclobutyl-acetamide 、
二甲氨基甲酰氯 、
potassium carbonate 在
crude product 、
rac-4-{[6-chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-cyclobutylcarbamoylmethyl-amino}-piperidine-1-carboxylic acid dimethylamide 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以to obtain 20 mg solid rac-4-{[6-Chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-cyclobutylcarbamoylmethyl-amino}-piperidine-1-carboxylic acid dimethylamide的产率得到rac-4-{[6-chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-cyclobutylcarbamoylmethyl-amino}-piperidine-1-carboxylic acid dimethylamide