METHOD FOR PREPARING BETA-(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)-PROPIONIC ACID SALTS Russian patent published in 2004 - IPC

Abstract RU 2239625 C2

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to the improved method for preparing β-(4-hydroxy-3,5-di-tert.-butylphenyl)-propionic acid salts. Method involves interaction of β-(4-hydroxy-3,5-di-tert.-butylphenyl)-propionic acid methyl ester with metal oxide taken among the following group: Ca, Ba, Zn at elevated temperature and pressure in an aqueous-alcoholic medium. Reaction is carried out at temperature 70-130^oC, under pressure 3-3.7 atm, in the presence of β-(4-hydroxy-3,5-di-tert.-butylphenyl)-propionic acid in the mole ratio ester : metal oxide : acid = 1.00:(0.45-0.55):(0.01-0.1), respectively, and the following addition of dioctyl phthalate as a solvent. Method provides enhancing selectivity and technological effectiveness of process and to improve quality of the end product.

EFFECT: improved preparing method.

2 tbl, 9 ex

Similar patents RU2239625C2

Title	Year	Author	Number
METHOD FOR PREPARING BETA-(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)-PROPIONIC ACID SALTS	2003	Kondrat'Ev V.V. Kutuzov P.I.	RU2243204C2
STABILIZING AGENTS OF POLYVINYL CHLORIDES AND METHOD OF THEIR SYNTHESIS	1999	Nijazov N.A. Timofeev V.P. Surkov V.D. Dmitriev Ju.K. Abramov I.E. Skokov G.V. Muratov M.M.	RU2170723C1
METHOD FOR PREPARING β-(4-HYDROXY-3.5-DI-TERTIARY-BUTYLPHENYL)-PROPIONIC ACID ESTERS	2004	Bikbulatov I.Kh. Kondrat'Ev V.V. Shulaev N.S. Daminev R.R. Maslova M.S.	RU2257375C1
METHOD FOR PREPARING $$$-(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)PROPIONIC ACID ESTERS	2004	Bikbulatov I.Kh. Kondrat'Ev V.V. Shulaev N.S. Daminev R.R. Maslova M.S.	RU2259995C1
METHOD OF SYNTHESIS OF β-(4-HYDROXY-3,5-DI-TERTIARY-BUTYL-PHENYL)-PROPIONIC ACID METHYL ESTER	2000	Surkov V.D. Nijazov N.A. Ljubimov N.V. Timofeev V.P.	RU2178408C1
METHOD FOR PREPARING BETA-(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)PROPIONIC ACID METHYL ESTER	2004	Bikbulatov I.Kh. Kondrat'Ev V.V. Shulaev N.S. Daminev R.R. Maslova M.S.	RU2263104C1
METHOD FOR PREPARING BETA-(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)-PROPIONIC ACID METHYL ESTER	2003	Kutuzov P.I. Kondrat'Ev V.V.	RU2239627C2
METHOD FOR OBTAINING ESTERS OF @@@-(4-HYDROXY-3,5-DI-TRET-BUTYLPHENYL)PROPIONIC ACID	0	Volodkin Aleksandr Aleksandrovich Rubajlo Valentin Leonidovich Bulgakov Viktor Andreevich Deev Aleksandr Sergeevich Shkutyak Zinovij Vasilevich Bannikov Gennadij Fedorovich Nikiforov Grigorij Alekseevich Ershov Vladimir Vladimirovich	SU1685920A1
METHOD FOR OBTAINING METHYL ESTER OF @@@-(4-HYDROXY-3,5-DI-TRET-(BUTYLPHENYL)PROPIONIC ACID	0	Volodkin Aleksandr Aleksandrovich Rubajlo Valentin Leonidovich Deev Aleksandr Sergeevich Bulgakov Viktor Andreevich Shabalina Lyudmila Nikolaevna Shkutyak Zinovij Vasilevich Zajtsev Aleksandr Sergeevich Nikiforov Grigorij Alekseevich Ershov Vladimir Vladimirovich Mosijchuk Anna Ivanovna Zaikov Gennadij Efremovich	SU1685919A1
(4-HYDROXY-3,5-DI-TERTIARY-BUTYLPHENYL)-PROPIONIC ACID SALTS AS STABILIZING AGENT OF POLYVINYL CHLORIDES AND METHOD OF THEIR SYNTHESIS	1998	Nijazov N.A. Surkov V.D. Timofeev V.P. Dmitriev Ju.K. Abramov I.E. Mokina G.N.	RU2150463C1

RU 2 239 625 C2

Authors

Kutuzov P.I.

Kondrat'Ev V.V.

Dates

2004-11-10—Published

2003-01-08—Filed