The direct synthesis of coumarin derivatives from m-substituted phenols and a&unsaturated carboxylic acids catalysed by solid-acid catalysts, such as zeolite H-Beta or Amberlyst-15, in toluene as solvent was studied. The conversion involves esterification followed by alkylation (ring closure). Ring
Zeolite-catalysed rearrangements in organic synthesis
β Scribed by R.A Sheldon; J.A Elings; S.K Lee; H.E.B Lempers; R.S Downing
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 111 KB
- Volume
- 134
- Category
- Article
- ISSN
- 1381-1169
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