Intramolecular [4+2] cycloaddition of furfurylsubstituted homoallylamines to allylhalides, acryloyl chloride and maleic anhydride
作者:Alexey V. Varlamov、Ekaterina V. Boltukhina、Fedor I. Zubkov、Eugenia V. Nikitina、Konstantin F. Turchin
DOI:10.1002/jhet.5570430611
日期:2006.11
chloride or allylhalides provided 3-aza-10-oxatricyclo[5.2.1.01,5]decenes. The tricycles are formed via an initial amide formation followed by a stereoselective exo-IMDAF (IntramolecularDiels-Alder of Furan). In case of competing cycloaddition (for compounds possessing two furan or two dienophilic moieties) the most substituted fivemembered cycle is preferably annulated. Refluxing of 4-R-4-furfurylaminobut-1-enes