A novel reductive cyclization of arylmethylidenemalononitrile promoted by samarium diiodide

Abstract

The intermolecular and intramolecular reductive coupling reactions of arylmethylidenemalononitriles induced by SmI₂ have been studied. The configuration of the cyclodimerization products, 4,5-trans-isomers of 2-amino-1,3,3-tricyano-4,5-diarylcyclopentenes, has been confirmed by X-ray analysis and a possible reaction mechanism is proposed.

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