Résumé/Abstract The reaction of 6, 8-dioxabenzocycloheptenes 3 or 8, 10-dioxacycloocta [de] naphthalenes 5 [easily prepared from the dibenzylic diols 1 and 4, respectively, and a carbonyl compound] with an excess of lithium and a catalytic amount of DTBB (2.5 mol%) ...
[Bendall,V.I.; Dharamshi,S.S. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1972 , p. 2732 - 2734]