M. Harmata et Pr. Schreiner, Intramolecular 4+3 cycloadditions. A theoretical analysis of simple diastereoselectivity in reactions of alkoxyallylic cations and furans, ORG LETT, 3(23), 2001, pp. 3663-3665
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A computational examination (B3LYP/6-31+G*//HF/6-31+G* + ZPVE) of an intram
olecular 4 + 3 cycloaddition reaction suggests a stepwise process and the l
ikelihood of reversibility in at least one of the pathways examined.