Tetrahedron Letters p. 1563 - 1566 (1990)
Update date:2022-08-05
Topics:
Liao, Chun-Chen
Ueng, Yih-Gang
The title α-diketone (1) was irradiated (λ > 340 nm) in a degassed benzene solution to afford a bicyclic ketone (2), 1,4-dipropylnaphthalene (3), and o-divinylbenzene (4); 1,4-dipropyl-2,3-dihydronaphthalene (6) being an intermediate which was trapped with dimethyl acetylenedicarboxylate to give the Diels-Alder adduct (5), and characterized by its visible absorption spectrum and its 1H nmr signal.
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