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2 621 343

(13)

(51)

IPC

C07C65/40(2006-01-01)

C07C51/367(2006-01-01)

C08G61/12(2006-01-01)

C08G8/02(2006-01-01)

(21) (22)

Application

2016127649, 2016-07-11

(24)

Start date

2016-07-11

(22)

Actual filing date

2016-07-11

(45)

Published

2017-06-02

(72)

Inventor

Zvukova Natalya DmitrievnaShaposhnikova Vera VladimirovnaAprelova Nadezhda MikhajlovnaSalazkin Sergej Nikolaevich

(73)

Holder

A.N. Nesmeyanov Institute Of Organoelement Compounds Of The Russian Academy Of Sciences

2-[4'-(2",6"-DIMETHYLPHENOXY)BENZOYL]BENZOIC ACID AND THE METHOD OF PREPARATION OF THE INVENTION Russian patent published in 2017 - IPC C07C65/40 C07C51/367 C08G61/12 C08G8/02

Abstract RU 2621343 C1

FIELD: chemistry.

SUBSTANCE: invention relates to 2-[4'-(2",6"-dimethylphenoxy)benzoyl]benzoic acid which can be used as a by-product in the synthesis of polyarylene phthalides with valuable properties. A method for preparing acid I in 77% yield from 2-(4'-fluorobenzoyl) benzoic acid and 2.6-dimethylphenol in the presence ofK₂CO₃ with two-stage heating: first in a mixture of N,N-dimethylacetamide with chlorobenzene until the azeotropic distillation of water and chlorobenzene is completed, then only in N,N-dimethylacetamide.

EFFECT: increased quality of output.

3 cl, 3 ex

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RU 2 621 343 C1

Authors

Zvukova Natalya Dmitrievna

Shaposhnikova Vera Vladimirovna

Aprelova Nadezhda Mikhajlovna

Salazkin Sergej Nikolaevich

Dates

2017-06-02—Published

2016-07-11—Filed