tert-butyl 2-[(2-chloro-5,6-dimethyl-3-nitropyridin-4-yl)amino]-1,1-dimethylethylcarbamate 、
叠氮化钠 、
氯化铈(III)七水合物 在
crude product 、
甲苯 作用下,
以to provide 66 g of tert-butyl 2-[(5,6-dimethyl-8-nitrotetrazolo[1,5-a]pyridin-7-yl)amino]-1,1-dimethylethylcarbamate as a yellow powder, mp 153.0-155.0° C.的产率得到tert-butyl 2-[(5,6-dimethyl-8-nitrotetrazolo[1,5-a]pyridin-7-yl)amino]-1,1-dimethylethylcarbamate