Tetrahedron Letters p. 3475 - 3478 (2000)
Update date:2022-08-29
Topics:
Cheng, Ying
Liu, Qing-Xiang
Meth-Cohn, Otto
4-N-(Methylformamido)pyridine with (COCl)2 gives the corresponding Vilsmeier reagent which reacts with 4-substituted dimethylanilines to produce 5-substituted-N-methylisatins. The corresponding 2-N- (methylformamido)pyridine under the same conditions generates benzo[2,3]pyrido[6,7-b][1,5]diazocines. (C) 2000 Elsevier Science Ltd.
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