1: in dimethyl sulfoxide
T=80°C; 25 h;
2: With thionyl chloride; N,N-dimethyl-formamide
4 h; Reflux;
3: With ammonium hydroxide in dichloromethane; water
T=20°C; Cooling;
参考文献
Lori, Franco; Chafouleas, James; De Forni, Davide; Solinas, Antonio; Varga, Zoltán; Greff, Zoltán; Örfi, László; Kéri, György
Patent: US2014/57911 A1, 2014 ;
Location in patent: Paragraph 0537-0540 ;