Control of regioselectivity and excited singlet reaction rates by substitution in the di-.pi.-methane rearrangement. Mechanistic and exploratory photochemistry
Control of regioselectivity and excited singlet reaction rates by substitution in the di-.pi.-methane rearrangement. Mechanistic and exploratory photochemistry
Remarkable Observations on Triplet-Sensitized Reactions. The Di-π-methane Rearrangement of Acyclic 1,4-Dienes in the Triplet Excited State
作者:Diego Armesto、Maria J. Ortiz、Antonia R. Agarrabeitia、Mar Martin-Fontecha、Noureddin El-Boulifi、Gonzalo Duran-Sampedro、Danielle Enma
DOI:10.1021/ol901636z
日期:2009.9.17
large majority of acyclic 1,4-dienes do not undergo photochemical di-π-methane (DPM) rearrangement under triplet-sensitized irradiation. The results of a detailed analysis of these processes demonstrate that a series of these compounds do indeed undergo highly efficient DPM rearrangement from their triplet excited states when suitable triplet sensitizers are used.