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2 021 277

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Application

4902834/04, 1991-01-14

(22)

Actual filing date

1991-01-14

(45)

Published

1994-10-15

(72)

Inventor

Torubarov A.I.Semin A.V.Goncharov V.A.

(73)

Holder

Gosudarstvennyj Sojuznyj Nauchno-Issledovatel'Skij Institut Organicheskoj Khimii I Tekhnologii

METHOD OF SYNTHESIS OF O-METHYL- OR O-ETHYLDICHLOROPHOSPHATES Russian patent published in 1994 - IPC

Abstract RU 2021277 C1

FIELD: organic chemistry. SUBSTANCE: product: ROP(O)Cl2, where R - CH3, C2H5, gross-formula is C1H3Cl2O2P, C2H5Cl2O2P. Reagent 1: POCl3. Reagent 2: ROH, where R - as indicated above. Reaction conditions: at 50-75 C, 100-250 mm mercury column; ratio of reagents 1:2 is (2.5-3.5):1 following by rectification at 15-50 mm mercury column, temperature of top column is 10-35 C and that of still is 67-90 C. EFFECT: improved method of synthesis. 2 tbl

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RU 2 021 277 C1

Authors

Torubarov A.I.

Semin A.V.

Goncharov V.A.

Dates

1994-10-15—Published

1991-01-14—Filed

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