Reaction of N-1,N-2-diarylamidines with (2,3-diphenylcyclopropen-1-ylidene)propanedinitrile: Synthesis of [2-arylamino-4(1H)-pyridinylidene]-propanedinitriles

摘要

A series of new [1-aryl-2-arylamino-5,6-diphenyl-4(1H)-pyridinylidene)propanedinitriles 3a-e has been synthesized by the reaction of N-1,N-2-diarylamidines 1a-e with (2,3-diphenylcyclopropen-1-ylidene)propanedinitrile (2). Structures of 3a-e have been assigned on the basis of NMR spectra and NOE experiments. [References: 20]