Synlett p. 432 - 434 (1997)
Update date:2022-08-16
Topics:
Posner, Gary H.
Hutchings, Richard H.
Woodard, Benjamin T.
The combination of 10-12 kbar pressure plus a catalytic amount of either zinc dibromide or zinc dichloride promotes Diels-Alder cycloadditions of 3-bromo-2-pyrone and of commercial 3-methoxycarbonyl-2-pyrone with several unactivated terminal alkenes, leading regioselectively, stereoselectively and directly to versatile bicyclic lactones.
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