A Cycloaddition Approach toward the Synthesis of Substituted Indolines and Tetrahydroquinolines
作者:Albert Padwa、Michael A. Brodney、Bing Liu、Kyosuke Satake、Tianhua Wu
DOI:10.1021/jo982453g
日期:1999.5.1
acyl azide by a Curtius rearrangement in the presence of an alcohol. Alkylation of the resulting N-alkyl carbamate with an alkenyl bromide allows for the synthesis of a wide variety of cycloaddition precursors. The scope of the IMDAF reaction was evaluated by using mono- and disubstituted alkenes, electron rich and electron deficient olefins, and acetylenic tethers. Cyclic 2-amidofurans were also synthesized
A new and convenient synthesis of 2-amidofurans using the Jacobi bis-heteroannulation method
作者:Bing Liu、Albert Padwa
DOI:10.1016/s0040-4039(99)00071-4
日期:1999.2
Cyclic 2-amidofurans were obtained using an intramolecularDiels-Alderreaction of 2-amido substituted oxazoles containing a tethered alkyne. This transformation represents a new route to this rare heterocyclic ring system.