Reaction of N1,N2-Diarylamidines with (2,3-Diphenylcyclopropen-1-ylidene)propanedinitrile: Synthesis of [2-Arylamino-4(1H)-pyridinylidene]-propanedinitriles

Mohsen A.-M. Gomaa; Dietrich Döpp

doi:10.1055/s-2003-40522

PAPER

Reaction of N ¹,N ²-Diarylamidines with (2,3-Diphenylcyclopropen-1-ylidene)propanedinitrile: Synthesis of [2-Arylamino-4(1H)-pyridinylidene]-propanedinitriles

Mohsen A.-M. Gomaa^a, Dietrich Döpp*^b
^a Chemistry Department, Faculty of Science, Minia University, El-Minia 61519, Egypt
^b Institut für Chemie, Universität Duisburg-Essen, 47048 Duisburg, Germany
Fax: +49(203)3794192; e-Mail: doepp@uni-duisburg.de;

Abstract

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Abstract

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.

Key words

pyridines - regioselectivity - ring expansion - cycloaddition - dicyanomethylene compounds

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References

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Reaction of N 1,N 2-Diarylamidines with (2,3-Diphenylcyclopropen-1-ylidene)propanedinitrile: Synthesis of [2-Arylamino-4(1H)-pyridinylidene]-propanedinitriles

Reaction of N ¹,N ²-Diarylamidines with (2,3-Diphenylcyclopropen-1-ylidene)propanedinitrile: Synthesis of [2-Arylamino-4(1H)-pyridinylidene]-propanedinitriles