Organometallic addition to N-(N-acyl-N-methylamino)cycloimminium salts: a general method for ketone synthesis
作者:Maria A. de las Heras、Andres Molina、Juan J. Vaquero、Jose L. Garcia Navio、Julio Alvarez-Builla
DOI:10.1021/jo00073a059
日期:1993.10
Synthesis of aldehydes from acyl chlorides via 1-(acylmethylamino)-3-methylimidazolium salts
作者:María A. de las Heras、Juan J. Vaquero、JoséL. García-Navio、Julio Alvarez-Builla
DOI:10.1016/0040-4039(94)02284-i
日期:1995.1
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 salts which, upon treatment with DIBALH gave aldehydes in good yields. A nalogously, dialdehydes were obtained from the corresponding bis-salts.
Synthesis of carbonyl and dicarbonyl compounds from organometallic reagents and N-imidazolium-N-methyl amides and bis-amides
作者:María A. de las Heras、Juan J. Vaquero、JoséL. García Navio、Julio Alvarez-Builla
DOI:10.1016/0040-4020(96)00882-4
日期:1996.11
A new method for the synthesis of selective acylating agents is described from the reaction of carboxylic acids with 3-methyl-1-methylamino-3H-imidazol-1-ium salts in the presence of appropriate coupling reagents. The amides and bis-amides thus prepared reacted selectively with organometallics to afford ketones and diketones and with DIBALH to give aldehydes and dialdehydes in high yields.