Patenton — panteon of patents

(19)

RU

(11)

2 022 962

(13)

C1

(51)

IPC

(21) (22)

Application

5057425/04, 1992-07-31

(22)

Actual filing date

1992-07-31

(45)

Published

1994-11-15

(72)

Inventor

Poljachenko L.N.Berdichevskaja A.M.Khristoforov V.L.Finkel'Shtejn E.I.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF PURIFYING ALL-E- OR 130-VITAMIN ACHO-ACID Russian patent published in 1994 - IPC

Abstract RU 2022962 C1

FIELD: organic chemistry. SUBSTANCE: product is all-E vitamin A-acid. The content of basic compound is 97.8 %. Reagent 1: all-E- or 130-vitamin AC1-C3-acid. Reagent 2: aqueous alkali solution. Reaction is carried out by refluxing the reaction mixture in the presence C1-C3 alkanol having branched or iso-stucture at pH 12-14 followed by removal of an activated charcoal. After acidifying and extracting with methylene chloride, the solvent is evaporated, the residue is dissolved in hexane or methylene chloride at 18-25 C, and recrystallization of the desired product is carried out at 25-15 C. EFFECT: preparation of high-purity product. 2 tbl

Similar patents RU2022962C1

Title Year Author Number
METHOD OF 4-TOLUIDINE-3-SULFONATE SODIUM SYNTHESIS 1992
  • Filippov V.M.
  • Okhterova I.A.
  • Ehndjus'Kin P.N.
  • Shkuro V.G.
  • Tsarev N.V.
  • Efimov V.Ju.
  • Materikin I.V.
 RU2010791C1
DERIVATIVES OF IRON PHTHALOCYANINE AS CATALYST OF OXIDATION OF TRIARYLMETHANE DYE LEUCOCOMPOUNDS AND A METHOD OF SYNTHESIS OF TRIARYLMETHANE DYES 1993
  • Korolev B.A.
  • Osmolovskaja L.A.
  • Kashkovskaja E.I.
  • Kuz'Min S.G.
  • Subbotin A.A.
  • Guzij S.N.
 RU2045531C1
METHOD OF BENFOTHIAMINE SYNTHESIS 1988
  • Gamaris N.V.
  • Lebedeva V.N.
  • Rudakova I.P.
  • Cheburkov Ju.A.
 SU1538476A1
METHOD OF SYNTHESIS OF THIAMINE PHOSPHORIC ESTERS 1992
  • Poljachenko V.M.
  • Jurkevich A.M.
  • Makhkamov Kh.M.
  • Leont'Eva L.I.
  • Jadgarov Eh.G.
 RU2041229C1
METHOD FOR PRODUCTION OF N,N-DI(CYCLOHEXYL)AMINE OF SORBIC ACID 1991
RU2053225C1
METHOD FOR PREPARING OF BETA-CAROTENE 1991
  • Vakulova L.A.
  • Zhidkova T.A.
  • Samokhvalov G.I.
  • Khristoforov V.L.
 RU2032667C1
METHOD OF SYNTHESIS OF CARNOSINE 1990
  • Skoblik T.I.
  • Markin A.Ju.
  • Zaborina T.G.
  • Filippovich E.I.
  • Zheltukhina G.A.
  • Evstigneeva R.P.
  • Babizhaev M.A.
  • Sharkov V.Ja.
 RU2030422C1
METHOD OF SANGUIRITRIN PREPARING 1995
  • Savina A.A.
  • Tolkachev O.N.
  • Lasskaja O.F.
  • Shejchenko V.I.
  • Anan'Eva A.A.
  • Libizova L.F.
  • Kopylova I.E.
  • Kabanov V.S.
 RU2089212C1
METHOD OF PURIFYING HYDROCHLORIDE 2-PHENYL-3-CARBETHOXY-4-DIMETHYLAMINOMETHYL-5-OXIBENZOFURAN 1981
  • Jurevich V.P.
  • Khljupina L.E.
  • Butakova L.I.
  • Voronina G.V.
 SU1088325A1
METHOD OF SYNTHESIS OF 2,4,6-TRIAMINO-5-NITROSOPYRIMIDINE 1989
  • Shejman B.M.
  • Rabinovich E.P.
  • Rudakova I.P.
  • Dalinchuk V.A.
  • Tsyban' A.V.
  • Beljakova M.S.
 RU1624955C

RU 2 022 962 C1

Authors

Poljachenko L.N.

Berdichevskaja A.M.

Khristoforov V.L.

Finkel'Shtejn E.I.

Dates

1994-11-15—Published

1992-07-31—Filed

read Similar patents