Unsymmetrical 2,5-dialkylpyrrolidines via reductive amination of 1,4-diketones
作者:Tappey H. Jones、James B. Franko、Murray S. Blum、H.M. Fales
DOI:10.1016/s0040-4039(00)71506-1
日期:1980.1
Reductive amination of 1,4-diketones with sodium cyanoborohydride and ammonium acetate produced 2,5-dialkylpyrrolidines in good yield and permitted inclusion of side chain unsaturation. The compounds were found in ants of the genus Monomorium.
Reaction of 1-benzyl-2,5-dicyanopyrrolidine with alkyl halides give unsymmetrical 2,5-dialkylated products (3) in high yields. Hydrolysis of 3 gives γ-diketones which serve as precursors for jasmone analogues having a cyclopentenone framework, while decyanation and debenzylation of 3 lead to 2,5-dialkylpyrrolidine alkaloids in high yields.