MD29C2 - Способ получения 4-ацил-2б3-дигидро-1б4-бензоксазинов или -бензтиазинов - Google Patents

Способ получения 4-ацил-2б3-дигидро-1б4-бензоксазинов или -бензтиазинов

Info

Publication number
MD29C2
MD29C2 MD94-0022A MD940022A MD29C2 MD 29 C2 MD29 C2 MD 29C2 MD 940022 A MD940022 A MD 940022A MD 29 C2 MD29 C2 MD 29C2
Authority
MD
Moldova
Prior art keywords
dehydro
benzoxazine
acyl
benzthiazine
combinations
Prior art date
Application number
MD94-0022A
Other languages
English (en)
Romanian (ro)
Other versions
MD29B1 (ro
Inventor
Moser Hans
Original Assignee
Novartis Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SU843825504A external-priority patent/SU1321374A3/ru
Application filed by Novartis Ag filed Critical Novartis Ag
Publication of MD29B1 publication Critical patent/MD29B1/xx
Publication of MD29C2 publication Critical patent/MD29C2/ru

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

Изобретение касается гетероциклических соединений, в частности 4-ацил-2,3-дигидро-1,4-бензоксазинов (БО) или 4-ацил-2,3-дигидробензтиазинов (БТ), которые могут найти применение в сельском хозяйстве для защиты культурных растений от фитотоксического воздействия гербицидов. Цель - создание более эффективных соединений указанного класса и назначения. Синтез БО и БТ ведут из соответствующего 2,3-дигидро-1,4-бензтиазина и ацилхлорида в среде, например, бензола в присутствии основания - карбоната натрия при комнатной температуре. Целевые продукты - кристаллические вещества или маслянистые жидкости. Испытания БО и БТ показывают, что относительное защитное действие составляет 63-88% против 13% для известного соединения.Таблицы: 3
MD94-0022A 1983-12-12 1994-02-09 Способ получения 4-ацил-2б3-дигидро-1б4-бензоксазинов или -бензтиазинов MD29C2 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56056483A 1983-12-12 1983-12-12
SU843825504A SU1321374A3 (ru) 1983-12-12 1984-12-11 Способ получени 4-ацил-2,3-дигидро-1,4-бензоксазинов или -бензтиазинов

Publications (2)

Publication Number Publication Date
MD29B1 MD29B1 (ro) 1994-06-30
MD29C2 true MD29C2 (ru) 1994-11-30

Family

ID=26666016

Family Applications (1)

Application Number Title Priority Date Filing Date
MD94-0022A MD29C2 (ru) 1983-12-12 1994-02-09 Способ получения 4-ацил-2б3-дигидро-1б4-бензоксазинов или -бензтиазинов

Country Status (2)

Country Link
LV (1) LV5247A3 (ru)
MD (1) MD29C2 (ru)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867444A (en) * 1972-07-17 1975-02-18 Stauffer Chemical Co Schiff{3 s base dichloroacetamides
US3931313A (en) * 1972-07-17 1976-01-06 Stauffer Chemical Company Schiff's base dichloroacetamides
US4393206A (en) * 1981-03-24 1983-07-12 Bayer Aktiengesellschaft Process for the production of 2,3-Dihydro-4H-1,4-benzothiazines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867444A (en) * 1972-07-17 1975-02-18 Stauffer Chemical Co Schiff{3 s base dichloroacetamides
US3931313A (en) * 1972-07-17 1976-01-06 Stauffer Chemical Company Schiff's base dichloroacetamides
US4393206A (en) * 1981-03-24 1983-07-12 Bayer Aktiengesellschaft Process for the production of 2,3-Dihydro-4H-1,4-benzothiazines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Cerere expusă publicului DE nr. 2828293, In. cl. C 07 D 215/08, 1980. *

Also Published As

Publication number Publication date
MD29B1 (ro) 1994-06-30
LV5247A3 (lv) 1993-10-10

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Legal Events

Date Code Title Description
CHPR Change of proprietorship

Free format text: NOVARTIS AG, CH

IF99 Valid patent on 19990615

Free format text: EXPIRES: 20041210