Asymmetric Synthesis of Cyclopropylamines Starting from <i>N</i>-Sulfinyl α-Chloro Ketimines
作者:Bram Denolf、Sven Mangelinckx、Karl W. Törnroos、Norbert De Kimpe
DOI:10.1021/ol0622054
日期:2007.1.1
of chiral N-(1-substituted cyclopropyl)-tert-butanesulfinamides in acceptable to good yields and diastereoselectivity via 1,3-dehydrohalogenation and subsequent addition of the Grignard reagent to the intermediate cyclopropylideneamine. Only in the case of allylmagnesium chloride did the reaction lead to aziridines in high yield. Further deprotection toward N-unprotected 1-substituted cyclopropylamines
The regiochemistry of the radical addition of N-chloroamides to enol ethers
作者:Gilles Caron、Jean Lessard
DOI:10.1016/s0040-4020(01)88026-1
日期:1993.9
The orientation of the radical addition of N-chloroamides (ZCONHCl) to enolethers was studied as a function of Z and the enolether structure and compared with the orientation of radical addition of thioacetic acid and the orientation of typical electrophilicadditions.
biocatalytic synthesis of chiral thiomorpholines using iminereductases (IREDs) is described. As substrates, four prochiral and one chiral 3,6-dihydro-2H-1,4-thiazines were synthesized in a modified Asinger reaction and subsequently reduced using iminereductases as a biocatalyst, NADPH as a cofactor, and a glucose dehydrogenase (GDH)-glucose cofactor regeneration system. As a result, chiral thiomorpholines
Lessard, Jean; Mondon, Martine; Touchard, Daniel, Canadian Journal of Chemistry, 1981, vol. 59, p. 431 - 450
作者:Lessard, Jean、Mondon, Martine、Touchard, Daniel
DOI:——
日期:——
Asymmetric [4+3] cycloadditions from chiral α-chloro imines
作者:Andrew S. Kende、He Huang
DOI:10.1016/s0040-4039(97)00649-7
日期:1997.5
The first asymmetric [4+3] cycloadditions of 2-aminoallyl cations derived from chiral a-chloro imines to furan and pyrrole systems are reported. The absolute configuration of the major enantiomer of the bicyclic ketone 4a derived from the cycloadducts has been elucidated, and possible rationales for the observed stereoselectivity are discussed. (C) 1997 Elsevier Science Ltd.