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2 039 745

(13)

C1

(51)

IPC

(21) (22)

Application

92015161/04, 1992-12-29

(22)

Actual filing date

1992-12-29

(45)

Published

1995-07-20

(72)

Inventor

Bolotin B.M.Savenkova E.B.Ehtingen N.B.

(73)

Holder

Tovarishchestvo S Ogranichennoj Otvetstvennost'Ju Firma

METHOD OF SYNTHESIS OF 2- (2-ARYLSULFONYLAMINOPHENYL) -4H-3,1-BENZOXAZINE-4-ONES Russian patent published in 1995 - IPC

Abstract RU 2039745 C1

FIELD: chemistry of heterocyclic compounds. SUBSTANCE: product: 2-(2-arylsulfonylaminophenyl)-4H-3,1-benzoxazine-4-ones. Reagent 1: anthranilic acid. Reagent 2: arylsulfochloride. Reaction conditions: in the medium of anhydrous toluene, in the presence of pyridine taken at the molar quantities equal with that of arylsulfochloride (not less). EFFECT: improved method of synthesis.

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RU 2 039 745 C1

Authors

Bolotin B.M.

Savenkova E.B.

Ehtingen N.B.

Dates

1995-07-20—Published

1992-12-29—Filed

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