Monatshefte fur Chemie p. 85 - 87 (1990)
Update date:2022-08-05
Topics:
Petkov, Ivan
Bojilova, Anka
Markov, Peter
The ultraviolet irradiation of air-saturated alcoholic solutions of 3-acetyl-3,4-dihydrocoumarin (1) leads to the formation of 3-acetylcoumarin (2) and 3,3'-diacetyl-3,3',4,4'-tetrahydro-4,4'-biscoumarin (3).The presence of molecular oxygen is an indispensable condition for the occurence of a photodehydrogenation process, which is quantitatively when effected on silica gel.
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