1: 2-mercaptoacetic acid methyl ester; 2-fluoro-3-(trifluoromethyl)benzaldehyde With potassium carbonate in N,N-dimethyl-formamide T=140°C; 2 h; 2: With hydrogenchloride in water 3: methanol With oxalyl dichloride T=80°C; 2 h;
参考文献
SUMITOMO CHEMICAL COMPANY, LIMITED; MUKUMOTO, Fujio; TAMAKI, Hiroaki
Patent: US2014/135214 A1, 2014 ;
Location in patent: Page/Page column 0105-0106 ;