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2 092 489

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IPC

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Application

95100111/04, 1995-01-05

(22)

Actual filing date

1995-01-05

(45)

Published

1997-10-10

(72)

Inventor

Tarasov S.G.Kulakovich V.T.Orlova T.V.Ivanov V.K.Shevnitsyn V.L.Militsyn I.A.Utkina T.A.Berezin N.A.Fetisov A.A.

(73)

Holder

Aktsionernoe Obshchestvo

METHOD OF PREPARING DI(β-CHLOROETHYL) VINYL PHOSPHONATE Russian patent published in 1997 - IPC

Abstract RU 2092489 C1

FIELD: chemistry of organophosphorus compounds. SUBSTANCE: present invention describes methods of preparing di-(b-chloroethyl) vinyl phosphonate (vinyphos) by dehydrochlorination of di-(b- chloroethyl)-b-chloroethyl phosphonate (isomerizate) in the presence of nucleophilic reagent during heating operation. The nucleophilic reagent is anhydrous sodium carbonate in synthesis of vinyphos, at isomerizate to b ratio of 1:1.1-1.4. Dehydrochlorination reaction is carried out at 115-125 C for 5-7 hours. EFFECT: more efficient preparation method. 1 tbl

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RU 2 092 489 C1

Authors

Tarasov S.G.

Kulakovich V.T.

Orlova T.V.

Ivanov V.K.

Shevnitsyn V.L.

Militsyn I.A.

Utkina T.A.

Berezin N.A.

Fetisov A.A.

Dates

1997-10-10—Published

1995-01-05—Filed

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