A Stereoselective and Atom-Efficient Approach to Multifunctionalized Five- and Six-Membered Rings via a Novel Michael-Initiated Intramolecular Diels−Alder Furan Reaction
作者:Irishi N. N. Namboothiri、Madhu Ganesh、Shaikh M. Mobin、Miriam Cojocaru
DOI:10.1021/jo048262x
日期:2005.3.1
of key precursors to the intramolecular Diels−Alder reaction of furan diene (IMDAF) have been prepared via a very facile 1,4-addition of O-, S-, N-, and C-centered nucleophiles possessing unsaturated tether to β-furyl nitroethylene. Subsequent IMDAF reaction of the 1,4-adducts, carried out under thermal conditions, provided five- and six-membered carbocycles and heterocycles fused to an easily cleavable