Unexpected products from the formylation of N,N-dimethylanilines with 2-formamidopyridine in POCl3
作者:Ying Cheng、Peng Jiao、David J. Williams、Otto-Meth Cohn
DOI:10.1039/b006148o
日期:——
2-Formamidopyridine in POCl3 solution reacts with N,N-dimethylaniline to give tris(4-dimethylaminophenyl)methane in 80% yield but with 4-X-N,N-dimethylanilines it gives 2-dimethylamino-5-X-phenyl[2-(N-methyl)formamido-5-X-phenyl](2-pyridylamino)methanes.