Modulation of Lifetimes and Diastereomeric Discrimination in Triplet-Excited Substituted Butane-1,4-diones through Intramolecular Charge-Transfer Quenching
作者:J. N. Moorthy、S. L. Monahan、R. B. Sunoj、J. Chandrasekhar、C. Bohne
DOI:10.1021/ja9818708
日期:1999.4.1
lifetimes have been determined for the diastereomers of a broad set of butane-1,4-dione derivatives (1−3). A remarkable dependence of lifetimes on conformationalpreferences is revealed in that the lifetimes are shorter for the meso diastereomers of 1−3 than those for the racemic ones. The intramolecular β-phenyl quenching is promoted in the case of meso diastereomers by virtue of the gauche relationship