METHOD OF SYNTHESIS OF DL-ALPHA-TOCOPHEROL OR ITS ACETATE Russian patent published in 1997 - IPC

Abstract RU 2098416 C1

FIELD: organic chemistry, vitamins. SUBSTANCE: invention relates to method of synthesis of dl-α-tocopherol or its acetate by interation of 2,3,5-trimethylhydroquinone with phytol or isophytol in solvent medium, in the presence of acid catalyst, at increased temperature followed by if necessary esterification of the synthesized tocopherol with acetic acid anhydride and the isolation of the end product. A mixture of ortho-boric acid and oxalic acid or tartaric acid, or citric acid is used as an acid catalyst. EFFECT: improved method of synthesis. 4 cl, 1 tbl

Similar patents RU2098416C1

Title Year Author Number
METHOD OF PREPARING DL-ALPHA-TOCOPHERYL ACETATE 1997
  • Khagen Jaedike
  • Paul' Grafen
  • Kharal'D Laas
RU2160258C2
METHOD OF SYNTHESIS OF ALPHA-TOCOPHEROL OR ALPHA-TOCOPHERYL ACETATE BY INTERACTION OF TRIMETHYLHYDROQUINONE AND PHYTOL OR ISOPHYTOL WITH RECOVERY OF ZINC HALOGENIDE CATALYST OF CONDENSATION TO PROCESS 1997
  • Bal'Denius Kaj-Uve
  • Kajzer Vul'F
  • Bokshtigel' Bernkhard
  • Laas Kharal'D
  • Shul'Ts Bernkhad
  • Shmitt Peter
  • Glitenberg Khel'Mut
RU2188823C2
SYNTHESIS OF CHROMANOL DERIVATIVES 2019
  • Weingarten, Melanie
  • Siegel, Wolfgang
  • Puhl, Michael
RU2795497C2
METHOD OF PREPARING ALPHA-TOCOPHEROL (VITAMIN E) 1998
  • Beljaev E.Ju.
  • Semichenko E.S.
  • Orlovskaja N.F.
  • Tovbis M.S.
RU2163600C2
METHOD OF PREPARING 6-ACETOXY-2,5,7,8-TETRAMETHYL-2-(4,8,12-TRIMETHYLTRIDECYL)-CHROMAN 0
  • Evstigneeva Rima Porfirevna
  • Sarycheva Irina Konstantinovna
  • Bazilevskaya Galina Iosifovna
  • Kostoglodov Petr Vyacheslavovich
  • Penyaeva Liliya Vladimirovna
  • Ermolaev Anatolij Vitalevich
  • Letunova Agata Borisovna
  • Zhitneva Valentina Vasilevna
SU696020A1
CONTINUOUS POLYAMIDE PRODUCTION PROCESS, METHOD OF PREPARING HIGH- MOLECULAR POLYCAPROAMIDE, AND POLYCAPROAMIDE WITH MOLECULAR WEIGHT 3000-14000 1994
  • Gunter Pipper
  • Andreas Klajnke
  • Peter Khil'Denbrand
RU2144048C1
PROCESS FOR PREPARATION OF 2,3,5-TRIMETHYLHYDROQUINONE 1994
  • Kalistratova T.A.
  • Shamsutdinov T.M.
  • Pustovit N.N.
  • Lepekhin V.F.
  • Repin V.A.
RU2126785C1
METHOD OF PREPARING ISOPRENOIDE DERIVATIVES OF 2,3,5-TRIMETHYL-1,4- BENZOQUINONE 2000
  • Spivak A.Ju.
  • Odinokov V.N.
  • Emel'Janova G.A.
  • Makhamatkhanov R.A.
RU2197469C2
METHOD OF STEREOSELECTIVE SYNTHESIS OF Z-1,2-DIARYLALLYL CHLORIDES 1990
  • Rajner Kober[De]
  • Rajner Seele[De]
  • Khajnts Isak[De]
  • Ehkkard Khikmann[De]
  • Norbert Getts[De]
  • Tomas Tsirke[De]
RU2014317C1
METHOD OF SYNTHESIS OF CAPROLACTAM 1995
  • Ehberkhard Fuks
  • Gjunter Akhkhammer
RU2154058C2

RU 2 098 416 C1

Authors

Paul' Grafen[De]

Gans Kifer[De]

Khagen Jehdike[De]

Dates

1997-12-10Published

1994-09-16Filed