Sabic Innovative Plastics IP B.v.

Bhaskar Veldurthy

Gurram Kishan

Venkata Rama Narayanan Ganapathy Bhotla

Salkod Parameshwar Mallika

Shivappa Basappa Halligudi

A method of producing a phenolphthalein 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 a metal oxide composition in combination with a porous support, wherein the metal is molybdenum, tungsten, or a combination comprising at least one of the foregoing metals.

Catalytic method for producing phenolphthalein compounds

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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Karnataka, India

Bhaskar Veldurthy