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2 039 063

(13)

(51)

IPC

(21) (22)

Application

4894049/04, 1990-12-20

(22)

Actual filing date

1990-12-20

(45)

Published

1995-07-09

(72)

Inventor

Anushirvan Pejman[De]Ojgen Ul'Mann[De]Irvin Vinkler[De]Mattias Khelsberg[De]Kristof Majkhsner[De]

(73)

Holder

Khekhst Ag

METHOD OF SYNTHESIS OF 2-FORMYLBENZYLPHOSPHONIC ACID DERIVATIVES Russian patent published in 1995 - IPC

Abstract RU 2039063 C1

FIELD: organophosphorus compounds. SUBSTANCE: product: derivatives of 2-formylbenzylphosphonic acid as a free acid or in the form of R₁,, R₂--di(similar or different)alkyl esters, or in the form of salt. Reagent 1: 2-formylbenzylhalide. Reagent 2: tri-R₁, R₂, R₃--alkylphosphite. Reaction conditions: in the medium of organic solvent, at 100-250 C. EFFECT: improved method of synthesis. 4 tbl

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RU 2 039 063 C1

Authors

Anushirvan Pejman[De]

Ojgen Ul'Mann[De]

Irvin Vinkler[De]

Mattias Khelsberg[De]

Kristof Majkhsner[De]

Dates

1995-07-09—Published

1990-12-20—Filed