Rearrangement of α,δ-dichloroaldimines to 2-formylpyrrolidines: α,α-Azacyclobisalkylation of aldehydes
作者:Norbert De Kimpe、Christian Stevens、Miklos Virag
DOI:10.1016/0040-4020(95)01112-9
日期:1996.2
Treatment of α,δ-dichloroaldimines, prepared via α-chlorination with N-chlorosuccinimide of the corresponding δ-chloroaldimines, with potassium carbonate in methanol led to the formation of 1-alkyl-2-(dimethoxymethyl)pyrrolidines in good yields. The reaction mechanism involved a skeletal rearrangement of the α,δ-dichloroaldimines to give bicyclic aziridinium intermediates which suffered ring opening
α,α-Cyclobisalkylation of aldehydes via ω-haloaldimines
作者:Christian V. Stevens、Norbert G. De Kimpe、Alan R. Katritzky
DOI:10.1016/s0040-4039(00)73093-0
日期:1994.5
The construction of a cycloalkyl ring at the alpha-position of aldehydes by cyclization of omega-haloaldimines is described. Alkylation of the corresponding aldimines with alpha,omega-dihaloalkanes followed by treatment with LDA results in a convenient access to alpha,alpha-cyclobisalkylated aldimines which are hydrolyzed to the alpha,alpha-cycloalkylaldehydes.
SULMON, PAUL;DE, KIMPE NORBERT;SCHAMP, NICEAS, SYNTHESIS,(1989) N, C. 8-12
作者:SULMON, PAUL、DE, KIMPE NORBERT、SCHAMP, NICEAS
DOI:——
日期:——
SULMON, PAUL;DE, KIMPE NORBERT;SCHAMP, NICEAS, TETRAHEDRON, 45,(1989) N2, C. 3907-3922