One-pot, solvent-free synthesis of α-aminonitriles under catalysis by magnesium bromide ethyl etherate
作者:Mohammad M Mojtahedi、M Saeed Abaee、Hassan Abbasi
DOI:10.1139/v06-024
日期:2006.3.1
the synthesis of α-aminonitriles from aldehydes, amines, and trimethylsilyl cyanide using a catalytic amount of magnesiumbromide ethyl etherate in the absence of solvent. Rapid formation of products is observed at room temperature in a one-pot procedure under very mild conditions giving excellent yields of the title compounds.Key words: catalyzed Strecker's reaction, α-aminonitriles, magnesium bromide
reacts with acetylene (2) in the presence of solid sodium hydroxide and tetrabutylammonium bromide (TBABr) as a catalyst, in DMSO, to give the vinyl derivative 3a. Whereas aminonitriles 1b-i, in the reaction with 2, afford dienamines 7. The different reactivity of 1a as compared to 1b-i is explained in terms of the different basicity of the amino moiety in vinyl derivatives 3. Dienamines 7 were hydrolyzed