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2 119 494

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Application

95120303/04, 1995-12-07

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Actual filing date

1995-12-07

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Published

1998-09-27

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Inventor

Belova V.M.Belovodskij V.P.Ozorova T.I.Serpukhovitin I.P.Davydovich D.V.Kirsanov A.T.Gorbach L.A.Belov A.V.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD OF PREPARING RETINYLTRIPHENYLPHOSPHONIUM SALTS Russian patent published in 1998 - IPC

Abstract RU 2119494 C1

FIELD: organic synthesis. SUBSTANCE: retinyltriphenylphosphonium salts are intermediates in production of beta-carotene and other carotinoids and may be applied in chemical-pharmaceutical industry. Preparation of salts consists in adding sulfuric or para-toluenesulfonic acid to triphenylphosphine at room temperature followed by adding vitamin A acetate and carrying out condensation reaction at 25-50 C. As organic solvent, C1-C4-alcohols, ethers or chlorine-containing solvents or their mixtures can be employed. EFFECT: simplified procedure due to avoiding necessity of isolating product from reaction mixture. 4 cl, 2 tbl, 26 ex

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RU 2 119 494 C1

Authors

Belova V.M.

Belovodskij V.P.

Ozorova T.I.

Serpukhovitin I.P.

Davydovich D.V.

Kirsanov A.T.

Gorbach L.A.

Belov A.V.

Dates

1998-09-27—Published

1995-12-07—Filed

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