Reductive cyclodimerization of arylmethylidenemalononitriles promoted by samarium and catalytic amount of iodine： facile synthesis of cyclopentene derivatives

摘要

Samarium and a catalytic amount of iodine were used to obtain functionalized cyclopentenes by reductive dimerization followed by intramolecular cyclization of 1， 1-dicyanoalkenes under mild conditions.