Evidence for a nucleophilic anti-attack on the cleaved C(2)–oxygen bond in Cl2AlH-catalyzed ring-opening of 2-substituted 1,3-dioxolanes
作者:Carlo F. Morelli、Arianna Fornili、Maurizio Sironi、Lavinia Durì、Giovanna Speranza、Paolo Manitto
DOI:10.1016/j.tetlet.2005.01.108
日期:2005.3
cis-4-methyl-5-trifluoromethyl-1,3-dioxolanes was found to occur with regioselectivecleavage of the O1–C2 bond by attack of the aluminum hydride from the direction anti to the departing oxygen. This stereochemical outcome, which appears to be unprecedented in the reductivecleavage of chiral acetals by aluminum reagents, is interpreted on the basis of theoretical calculations.