Reactions of unsaturated 1,3-dioxan derivatives. Part VI. Addition of 2-(2-furyl)-1,3-dioxan and its derivatives to maleic anhydride
Abstract
The reaction of 2-(2-furyl)-1,3-dioxan with maleic anhydride in diethyl ether or benzene is stereochemically heterogeneous, yielding a mixture of endo- and exo-adducts. The structures of these adducts have been studied by means of bromination and lactonization reactions and i.r. and n.m.r. spectroscopy.