Tetrahedron Letters p. 2791 - 2794 (1992)
Update date:2022-09-26
Topics:
Seboek, Peter
Jekoe, Jozsef
Timar, Tibor
Jaszberenyi, Joseph Cs.
A systematic study of the reaction of a series of monosubstituted phenols 3 and 3-methylbut-2-enoic acid 4 in phosphorus oxychloride/zinc chloride revealed that the formation of 4-chromanones was strongly infuenced by the substituents and their position on the aromatic ring of the starting phenols.
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