Abstract
A new, fast and straightforward method for the one-pot reaction of aromatic and aliphatic aldehydes and dialdehydes with ethyl cyanoacetate and cyanogen bromide was developed to afford stereoselectively diethyl 1,2-dicyano-3-alkyl/arylcyclopropane-1,2-dicarboxylate in excellent yields and short reaction time (about 5 s). The structures were characterized by IR, 1H NMR and 13C NMR spectroscopy. The reaction mechanism was discussed.
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