Method for producing phenolphthalein using a heteropolyacid catalyst

Method for producing phenolphthalein using a heteropolyacid catalyst

1 112 2 112 1 112 2 112 A method for producing a phenolphthalein compound comprises: reacting a phenolic compound of the formula: wherein Ris a hydrogen or a C-Chydrocarbyl group, with a phthalic anhydride compound of the formula: wherein Ris a hydrogen, a C-Chydrocarbyl group, or a halogen, in the...

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Hauptverfasser: Bhotla, Venkata Rama Narayanan Ganapathy, Halligudi, Shivappa Basappa, Kishan, Gurram, Mallika, Salkod Parameshwar, Veldurthy, Bhaskar
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creator Bhotla, Venkata Rama Narayanan Ganapathy
Halligudi, Shivappa Basappa
Kishan, Gurram
Mallika, Salkod Parameshwar
Veldurthy, Bhaskar
description 1 112 2 112 1 112 2 112 A method for producing a phenolphthalein compound comprises: reacting a phenolic compound of the formula: wherein Ris a hydrogen or a C-Chydrocarbyl group, with a phthalic anhydride compound of the formula: wherein Ris a hydrogen, a C-Chydrocarbyl group, or a halogen, in the presence of a heterogeneous catalyst and a promoter to form a reaction mixture comprising a phenolphthalein compound of the formula: wherein each Ris independently a hydrogen or a C-Chydrocarbyl group; and Ris a hydrogen, a C-Chydrocarbyl group, or a halogen; wherein the heterogeneous catalyst comprises, on a porous support, a calcination product of a heteropolyacid composition.
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title Method for producing phenolphthalein using a heteropolyacid catalyst
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