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2 015 139

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C1

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IPC

(21) (22)

Application

4939021/04, 1991-05-22

(22)

Actual filing date

1991-05-22

(45)

Published

1994-06-30

(72)

Inventor

Mamedov V.A.Polushina V.L.Kataeva O.N.Mertsalova F.F.Litvinov I.A.Nuretdinov I.A.

(73)

Holder

Institut Organicheskoj I Fizicheskoj Khimii Im.A.E.Arbuzova Kazanskogo Filiala Ran

METHOD OF SYNTHESIS OF SUBSTITUTED 2,5-DIBENZOYL-1,4-DIOXINES Russian patent published in 1994 - IPC

Abstract RU 2015139 C1

FIELD: organic chemistry. SUBSTANCE: product: 2,5-dibenzoyl-1,4-dioxines of the general formula , where R1=H - H, R2=C6H4OCH3-n (I); R1=OCH3, R2=CCl3 (II); R1=OC2H5, R2=C6H4OCH3-n (III). Reagent 1: dichloroacetone of formula II: n-R1C6H4CCHCl2. Reagent 2: aldehyde of formula III, . Reaction conditions: process is carried out at 0-15 C in the medium of tert.-C4H9OH in the presence of tert.-С4H9OK at molar ratio of components 1:1:(1-2). EFFECT: improved method of synthesis.

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RU 2 015 139 C1

Authors

Mamedov V.A.

Polushina V.L.

Kataeva O.N.

Mertsalova F.F.

Litvinov I.A.

Nuretdinov I.A.

Dates

1994-06-30—Published

1991-05-22—Filed

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