1: 4-methylene-oxetan-2-one With 4-(N,N-dimethlyamino)pyridine; polystyrene Wang resin in dichloromethane
T=20°C; 18 h;
2: benzaldehyde; urea With hydrogenchloride in 1,4-dioxane
T=70°C; Biginelli reaction; 18 h;
3: With trifluoroacetic acid in dichloromethane
T=20°C; 0.5 h;
参考文献
Valverde, Maria Garcia; Dallinger, Doris; Kappe, C. Oliver
Synlett, 2001 , # 6 p. 741 - 744