Photolysis of 4-substituted-4-hydroxy-3-cyclobuten-1-ones: a new route to butenolides from 4-hydroxycyclobutenones
作者:Steven T. Perri、Lafayette D. Foland、Harold W. Moore
DOI:10.1016/0040-4039(88)85284-5
日期:1988.1
ring closure to provide butenolide products. This transformation is envisaged to involve a stereoselective disrotatory electrocyclic ring opening to the corresponding conjugated ketene in which the C4 hydroxyl group rotates inward towards the ketene moiety. Intramolecular trapping of the ketene moiety with the proximal hydroxyl group results in the corresponding butenolide products.