Hypervalent Iodine in the Synthesis of Bridgehead Heterocycles: A New Synthesis of 3, 5-Diarylthiazolo[2, 3-C]-s-triazoles
摘要:
The synthesis of 3,5-diarylthiazolo[2,3-c]-s-triazoles (3a-f) has been accomplished by using a new method involving oxidation of arenecarbaldehyde-4-arylthiazol-2-ylhydrazones (2a-f) with iodobenzene diacetate (IBD) in dichloromethane by intramolecular cyclization in high yields.