Method for producing phenolphthalein using heteropolyacid catalyst

A method for producing a phenolphthalein compound comprises: reacting a phenolic compound of the formula (I): wherein R1 is a hydrogen or a C1-C12 hydrocarbyl group, with a phthalic anhydride compound of the formula (II): wherein R2 is a hydrogen, a C1-C12 hydrocarbyl group, or a halogen, in the pre...

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Hauptverfasser:	HALLIGUDI SHIVAPPA BASAPPA, MALLIKA SALKOD PARAMESHWAR, VELDURTHY BHASKAR, BHOTLA VENKATA RAMA NARAYANAN, KISHAN GURRAM
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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