Patenton — panteon of patents

(19)

RU

(11)

2 050 346

(13)

C1

(51)

IPC

(21) (22)

Application

4909001/04, 1991-02-07

(22)

Actual filing date

1991-02-07

(45)

Published

1995-12-20

(72)

Inventor

Zhesko T.E.Bojarskij V.P.Nikitina A.G.Stepanov A.I.Vorob'Ev B.L.Dynaj M.G.

(73)

Holder

Zhesko Tat'Jana Evgen'EvnaBojarskij Vadim Pavlovich

METHOD FOR PRODUCTION OF AROMATIC DICARBOXYLIC ACIDS Russian patent published in 1995 - IPC

Abstract RU 2050346 C1

FIELD: organic chemistry. SUBSTANCE: desired products have common formula R(COOH)2 where R is C10H6, (C6H4)2, (C6H4)2·X where X is SO2. CO is used as reagent 1, aromatic dihalide R Hal2 where R is as mentioned above being used as reagent 2. Their interaction is carried out in methanol medium at 55-63 C in the presence of carbonates or hydroxides of Na or K. Thus prepared esters are hydrolyzed, hydrolyzate being acidified, desired product being filtered. Cobalt carbonyl which contains 0.5-5.0 mass of cobalt is used as catalyst. Ethylene chlorohydrin is used as cocatalyst, molar ratio of ethylene chlorohydrin and cobalt carbonyl being (5.6-12.6):1. EFFECT: improves efficiency of method. 1 tbl

Similar patents RU2050346C1

Title Year Author Number
METHOD OF SYNTHESIS OF P-BUTYLBENZOIC ACID 1991
  • Zhesko T.E.
  • Bojarskij V.P.
  • Nikitina A.G.
  • Novikova E.G.
  • Rybakov A.B.
  • Shigalevskij V.A.
  • Solomatin G.G.
  • Chesnovskij V.S.
  • Beletskaja I.P.
 RU2026854C1
METHOD FOR PRODUCTION OF ALCOHOL SOLUTION OF COBALT CARBONYL CATALYST 1995
  • Zhesko T.E.
  • Nikitina A.G.
  • Ferapontov A.A.
  • Mikhajlov V.E.
  • Bojarskij V.P.
 RU2077948C1
METHOD OF SYNTHESIS OF AROMATIC OR HETEROAROMATIC CARBOXYLIC COMPOUNDS 1993
  • Zhesko T.E.
  • Bojarskij V.P.
  • Nikitina A.G.
  • Novikova E.G.
  • Ferapontov A.A.
 RU2064921C1
METHOD FOR PRODUCTION OF 5,6-ACENAPHTHENE DICARBOXYLIC ACID 1988
  • Zhesko T.E.
  • Nikitina A.G.
  • Novikova E.G.
  • Bojarskij V.P.
  • Beletskaja I.P.
  • Vorozhtsov G.N.
  • Shigalevskij V.A.
  • Solomatin G.G.
 SU1630247A1
METHOD FOR DETOXIFICATION OF POLYCHLOROBIPHENYLS 2002
  • Zhesko T.E.
  • Bojarskij V.P.
  • Lanina S.A.
  • Nikiforov V.A.
 RU2215729C1
PROCESS FOR PREPARING CALCIUM SALT OF PHENYLPYRORACEMIC ACID 1993
  • Zhesko T.E.
  • Bojarskij V.P.
  • Nikitina A.G.
  • Novikova E.G.
  • Romashchenkova N.D.
  • Bogach E.V.
  • Rudnev Ju.P.
  • Mil'Gotin I.M.
 RU2047592C1
METHOD OF 5,6-ACENAPHTHENE DICARBOXYLIC ACID SYNTHESIS 1987
  • Zhesko T.E.
  • Nikitina A.G.
  • Novikova E.G.
  • Bojarskij V.P.
  • Semenova T.A.
  • Gvozdovskij G.N.
  • Shigalevskij V.A.
  • Bondarenko E.F.
  • Vorozhtsov G.N.
  • Beletskaja I.P.
 SU1577283A1
METHOD OF PRODUCING (C-CARBONYL)DIMETHYL PHTHALATE 2011
  • Ehl'Man Aleksandr Rehmovich
  • Ovsjannikova Ljudmila Vasil'Evna
 RU2470008C1
METHOD OF PREPARING N-ACYL-ALFA-AMINO ACIDS 1995
  • Matkhias Beller
  • Khartmut Fisher
  • Tomas Gerdau
  • Peter Gros
 RU2140903C1
METHOD OF CARBONYLATION USING CATALYSTS WITH METAL-TRIDENTATE LIGANDS 2004
  • Gamers Sander
  • Sanli Dzhon Glenn
 RU2348607C2

RU 2 050 346 C1

Authors

Zhesko T.E.

Bojarskij V.P.

Nikitina A.G.

Stepanov A.I.

Vorob'Ev B.L.

Dynaj M.G.

Dates

1995-12-20—Published

1991-02-07—Filed

read Similar patents