2-(4,4-difluoro-piperidine-1-carbonyl)-5-hydroxy-pyrrolo[2,3-b]pyridine-1-carboxylic acid tert-butyl ester 、
potassium carbonate 、
1-溴-3-氯丙烷 在
5-(3-chloro-propoxy)-2-(4,4-difluoro-piperidine-1-carbonyl)-pyrrolo[2,3-b]pyridine-1-carboxylic acid tert-butyl ester 作用下,
以
丁酮 为溶剂,
以to give the desired product as a colorless foam (63%)的产率得到5-(3-chloro-propoxy)-2-(4,4-difluoro-piperidine-1-carbonyl)-pyrrolo[2,3-b]pyridine-1-carboxylic acid tert-butyl ester