Synthesis of aldehydes from acyl chlorides via 1-(acylmethylamino)-3-methylimidazolium salts

Article abstract of DOI:10.1016/0040-4039(94)02284-I

The reaction of acyl chlorides with 1-amino-3-methylimidazolium salts, followed by N-methylation of the resulting N-aminides, afforded 1-(acylmethylamino)-3-methylimidazolium sals which, upon treatment with DIBALH gave aldehydes in good yields. Analogously, dialdehydes were obtained from the corresponding bis-salts.