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2005
Benzopyran derivatives
R 0350
Formation of Coumarins by Palladium(II)-Catalyzed Reaction of Phenols with
Acrylates. — Coumarins are obtained in moderate to good yields by the reaction
27- 135 Ethyl
of ethyl cinnamates with phenols in the presence of Pd(OAc)2 and using K2S2O8 as an
oxidant. However, no coumarins are obtained if 4-methoxyphenol, 3,4-methylenedioxyphenol or 2-naphthol are employed as phenols. — (AOKI, S.; OYAMADA, J.;
KITAMURA*, T.; Bull. Chem. Soc. Jpn. 78 (2005) 3, 468-472; Dep. Chem. Appl.
Chem., Fac. Sci. Eng., Saga Univ., Honjo, Saga 840, Japan; Eng.) — M. Bohle
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