Stereochemical studies on the intramolecular diels alder reaction of furans with doubly activated dienophiles.
作者:Laurence M. Harwood、Geraint Jones、John Pickard、Royston M. Thomas、David Watkin
DOI:10.1016/s0040-4039(00)82203-0
日期:1988.1
The stereochemical outcome of intramolecular Diels-Alder reactions of furans with Z- and E-2-ene-1,4-dione units attached by a bridging chain to C-2 of the furan results from modification of the steric demands of the bridging chain by the preference of the external activating group to adopt an endo- stereochemistry.