反应条件
1: 6-chloropyridazine-3-carboxylic acid With oxalyl dichloride in dichloromethane; N,N-dimethyl-formamide T=20°C; 2: methanol in dichloromethane; N,N-dimethyl-formamide 0.5 h;
参考文献
BIOGEN IDEC MA INC.; HUTCHINGS, Richard, H.; JONES, John, Howard; CHAO, Jianhua; ENYEDY, Istvan, J.; MARCOTTE, Douglas
Patent: WO2014/28669 A1, 2014 ;
Location in patent: Paragraph 00320 ;