Nitrones in Organic Synthesis. Synthesis of Secondary Allyl Amines
作者:A. Dondoni、F. L. Merchán、P. Merino、T. Tejero
DOI:10.1080/00397919408010566
日期:1994.10
Abstract Nitrones 1 undergo addition of vinyl organomagnesium bromide to give the allyl hydroxylamines 3 which are easily reduced to the corresponding N-benzyl allyl amines 2.
Dondoni A., Merchan F. L., Merino P., Tejero T., Synth. Commun, 24 (1994) N 18, S 2551-2555
作者:Dondoni A., Merchan F. L., Merino P., Tejero T.
DOI:——
日期:——
1,3-Dipolar cycloaddition of C-(2-thiazolyl)nitrones to chiral acrylates. Synthesis of enantiopure α-amino-2-alkylthiazoles and 5-formylpyrrolidin-2-ones
作者:Tomas Tejero、Alessandro Dondoni、Isabel Rojo、Francisco L Merchán、Pedro Merino
DOI:10.1016/s0040-4020(97)00040-9
日期:1997.3
The 1,3-dipolar cycloaddition of thiazolyl nitrones with chiral acrylates has been studied. The use of the Oppolzer'scamphorsultam as chiral inductor provided isoxazolidines with excellent regio- and diastereoselectivities and good asymmetric induction. The cycloadducts were converted into homochiral α-amino-2-alkylthiazoles and 5-(2-thiazolyl)-3-hydroxy-2-pyrrolidinones. The latter compounds were