Photochemical Reactions. 125th communication [1]. Photochemistry of homoconjugated cyclobutanones. I. Synthesis and photolysis of a Spiro [3.6]deca-5, 7-dien-1-one
作者:Terry A. Lyle、Bruno Frei
DOI:10.1002/hlca.19810640816
日期:1981.12.16
The title compound 4 was prepared in 54% overall yield from eucarvone (5). On triplet sensitization 4 gives two products resulting from a 1,2-acyl shift (8 and 9), whereas singlet excitation of 4 causes decarbonylation and ketene elimination (4 10 and 11).
制备的标题化合物4的总产率为54%,来自于真carvone(5)。在三重态敏化作用下,4产生了1,2-酰基转移(8和9)产生的两个产物,而4的单重态激发引起脱羰基作用和乙烯酮消除(4 10和11)。