3-chloro-2-fluoro-6-hydroxybenzaldehyde 、
4-(甲苯-4-磺酰氧)哌啶-1-羧酸叔丁酯 、
potassium carbonate 以
N,N-二甲基甲酰胺 为溶剂,
以to give 4-(4-chloro-3-fluoro-2-formyl-phenoxy)-piperidine-1-carboxylic acid tert-butyl ester as a brown oil (Yield 3.75 g, 84%)的产率得到4-(4-chloro-3-fluoro-2-formyl-phenoxy)-piperidine-1-carboxylic acid tert-butyl ester