Chemistry of Heterocyclic Compounds p. 1059 - 1067 (1987)
Update date:2022-09-26
Topics:
Kirpichenok, M. A.
Levchenko, S. L.
Grandberg, I. I.
The reactions of 4-methyl-7-diethylaminocoumarin with various electrophilic reagents - acetic anhydride, complexes of unsaturated compounds (styrene, dihydropyran, phenylacetylene) with Lewis acids, and copper halides - were used to synthetize 3-, 6-, and 8-substituted coumarins.It was shown that the selectivity of reactions involving substitution in the 3 position increases with an increase in the "softness" of the Lewis acid.
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