tert-butyl ((5-bromo-3-fluoropyridin-2-yl)methyl)carbamate 、
2-氨基-5-甲氧基三氟甲苯 在
crude product 、 XRS 、 Water TFA acetonitrile 作用下,
以The product was thus obtained in a yield of 26% of theory的产率得到tert-butyl [3-fluoro-5-(4-methoxy-2-(trifluoromethyl)-phenylamino)-pyridin-2-ylmethyl]-carbamate