Abstract

Addition of magnesium perchlorate to a solution of imine PhCHN-C 4H 9 ( 1 ) and diimine PhCHN(CH 2) 3NCHPh ( 4 ), in acetonitrile, results in the formation of the corresponding iminium salts due to traces of water present in the solvent. This conclusion is based upon infrared spectra of solutions of imines, iminium salts, deuterated iminium salts and mixtures of imines and magnesium perchlorate in acetonitrile, containing varying amounts of water. The results suggest that magnesium ion catalyzed reactions of imines in CH 3CN involve iminium intermediates.

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