Remarkable observations on triplet-sensitized reactions. the di-pi-methane rearrangement of acyclic 1,4-dienes in the triplet excited state.
Previous studies have led to the conclusion that a large majority of acyclic 1,4-dienes do not undergo photochemical di-pi-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.
Armesto
Diego
D
Departamento de Quimica Organica I, Facultad de Quimica, Universidad Complutense, 28040-Madrid, Spain. darmesto@quim.ucm.es
Ortiz
Maria J
MJ
Agarrabeitia
Antonia R
AR
Martin-Fontecha
Mar
M
El-Boulifi
Noureddin
N
Duran-Sampedro
Gonzalo
G
Enma
Danielle
D