ENVIRONMENTALLY FRIENDLY SYNTHESIS OF COUMARIN DERIVATIVES EMPLOYING HETEROGENEOUS CATALYSIS
作者： E.A. Gunnewegh , A.J. Hoefnagel , R.S. Downing , H. van Bekkum
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摘要: Zeolite H-BEA and other solid acids have been shown to be effective catalysts for the production of coumarin derivatives from activated phenols or esters possessing an additional alkylation function, β-keto (Pechmann reaction). These heterogeneous eliminate acidic waste streams associated with conventional (Lewis) acid catalysts. proved preferred catalyst.
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