Cycloaddition reactions of 1,4-benzoquinone mono- and bisimides with styrenyl systems: New syntheses of nitrogen substituted azapterocarpans, pterocarpans, 2-aryl-2,3-dihydroindoles and -dihydrobenzofurans
作者:Thomas A. Engler、Kenneth O. Lynch、Wenying Chai、Steven P. Meduna
DOI:10.1016/0040-4039(95)00375-m
日期:1995.4
Lewisacid-promotedreactions of 1,4-benzoquinones and 1,4-benzoquinone bis- and monoimides with various 2H-chromenes, N-tosyl-1,2-dihydroquinolines and styrenes regio- and stereoselectively produce the title compounds in good yields.
The three component reaction involving isocyanides, dimethyl acetylenedicarboxylate and quinoneimides: a facile synthesis of spirofused γ-iminolactams
作者:Vijay Nair、R. Dhanya、S. Viji
DOI:10.1016/j.tet.2005.04.008
日期:2005.6
The three component reaction of the zwitterion generated from dimethylacetylenedicarboxylate and isocyanides with various quinoneimides is described. The reaction afforded the corresponding γ-spiroiminolactams in good yields.