DK0882043T3 - Halogenpyrimidiner samt deres anvendelse som midler til bekæmpelse af skadelige organismer - Google Patents

Halogenpyrimidiner samt deres anvendelse som midler til bekæmpelse af skadelige organismer

Info

Publication number
DK0882043T3
DK0882043T3 DK97900603T DK97900603T DK0882043T3 DK 0882043 T3 DK0882043 T3 DK 0882043T3 DK 97900603 T DK97900603 T DK 97900603T DK 97900603 T DK97900603 T DK 97900603T DK 0882043 T3 DK0882043 T3 DK 0882043T3
Authority
DK
Denmark
Prior art keywords
pct
agents
control
optionally substituted
harmful organisms
Prior art date
Application number
DK97900603T
Other languages
Danish (da)
English (en)
Inventor
Ulrich Heinemann
Herbert Gayer
Peter Gerdes
Bernd-Wieland Krueger
Bernd Gallenkamp
Uwe Stelzer
Albrecht Marhold
Ralf Tiemann
Gerd Haenssler
Klaus Stenzel
Stefan Dutzmann
Original Assignee
Bayer 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
Application filed by Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of DK0882043T3 publication Critical patent/DK0882043T3/da

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D273/00Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D413/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/02Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
    • C07D413/12Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D413/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Indole Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
DK97900603T 1996-01-22 1997-01-15 Halogenpyrimidiner samt deres anvendelse som midler til bekæmpelse af skadelige organismer DK0882043T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602095A DE19602095A1 (de) 1996-01-22 1996-01-22 Halogenpyrimidine
PCT/EP1997/000151 WO1997027189A1 (de) 1996-01-22 1997-01-15 Halogenpyrimidine und ihre verwendung als schädlingsbekämpfungsmittel

Publications (1)

Publication Number Publication Date
DK0882043T3 true DK0882043T3 (da) 2003-01-06

Family

ID=7783320

Family Applications (1)

Application Number Title Priority Date Filing Date
DK97900603T DK0882043T3 (da) 1996-01-22 1997-01-15 Halogenpyrimidiner samt deres anvendelse som midler til bekæmpelse af skadelige organismer

Country Status (34)

Country Link
US (2) US6103717A (nl)
EP (1) EP0882043B1 (nl)
JP (1) JP3262277B2 (nl)
KR (1) KR100383906B1 (nl)
CN (3) CN1213037C (nl)
AT (1) ATE223407T1 (nl)
AU (1) AU720066B2 (nl)
BG (1) BG64178B1 (nl)
BR (1) BR9707160A (nl)
CA (1) CA2243591C (nl)
CL (1) CL2004001128A1 (nl)
CO (1) CO4770925A1 (nl)
CZ (1) CZ295548B6 (nl)
DE (2) DE19602095A1 (nl)
DK (1) DK0882043T3 (nl)
ES (1) ES2180021T3 (nl)
FR (1) FR06C0042I2 (nl)
HK (2) HK1017354A1 (nl)
HU (1) HU227488B1 (nl)
ID (1) ID15839A (nl)
IL (1) IL124974A (nl)
IN (2) IN187450B (nl)
MX (1) MX203302B (nl)
NL (1) NL350025I1 (nl)
NZ (1) NZ325869A (nl)
PL (1) PL187756B1 (nl)
PT (1) PT882043E (nl)
RU (1) RU2191186C2 (nl)
SK (1) SK283815B6 (nl)
TR (1) TR199801392T2 (nl)
TW (1) TW349001B (nl)
UA (1) UA56156C2 (nl)
WO (1) WO1997027189A1 (nl)
ZA (1) ZA97478B (nl)

Families Citing this family (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706396A1 (de) * 1996-12-09 1998-06-10 Bayer Ag Verfahren zur Herstellung von 3-(l-Hydroxiphenyl-l-alkoximinomethyl)dioxazinen
DE19739982A1 (de) * 1996-12-10 1998-06-18 Bayer Ag Fungizide Wirkstoffkombinationen
DE19713762A1 (de) * 1997-04-03 1998-10-08 Bayer Ag Methoximinomethyldioxazine
US6297236B1 (en) 1998-04-06 2001-10-02 Bayer Aktiengesellschaft Fungicide active substance combinations
DE19716257A1 (de) 1997-04-18 1998-10-22 Bayer Ag Fungizide Wirkstoffkombination
EP0988289A2 (en) 1997-06-05 2000-03-29 Takeda Pharmaceutical Company Limited Heterocyclic compounds, their production and use
DE19744705A1 (de) 1997-10-10 1999-04-15 Bayer Ag Verfahren zur Herstellung gegebenenfalls substituierter Benzofuranone
DE19819828A1 (de) * 1998-05-04 1999-11-11 Bayer Ag Methoximinomethyloxathiazine
EP0972770B1 (en) * 1998-07-14 2001-09-19 Basf Aktiengesellschaft Acaricidal and insecticidal substituted pyrimidines and a process for the preparation thereof
DE19939841A1 (de) * 1998-11-20 2000-05-25 Bayer Ag Fungizide Wirkstoffkombinationen
DE19857963A1 (de) * 1998-12-16 2000-06-21 Bayer Ag Agrochemische Formulierungen
AU2661800A (en) 1999-01-13 2000-08-01 Basf Aktiengesellschaft Azadioxacycloalkenes and their use for combating harmful fungi and animal pests
WO2001036399A1 (de) * 1999-11-12 2001-05-25 Basf Aktiengesellschaft Azadioxacycloalkene
RU2002119003A (ru) * 1999-12-13 2004-01-10 Байер Акциенгезельшафт (De) Смеси фунгицидных активных веществ
DE10014607A1 (de) 2000-03-24 2001-09-27 Bayer Ag Verfahren zur Herstellung von unsymmetrischen 4,6-Bis(aryloxy pyrimidin-Derivaten
DE10019758A1 (de) 2000-04-20 2001-10-25 Bayer Ag Fungizide Wirkstoffkombinationen
DE10103832A1 (de) * 2000-05-11 2001-11-15 Bayer Ag Fungizide Wirkstoffkombinationen
DE10049804A1 (de) * 2000-10-09 2002-04-18 Bayer Ag Wirkstoffkombinationen mit fungiziden und akariziden Eigenschaften
DE10059605A1 (de) 2000-12-01 2002-06-06 Bayer Ag Fungizide Wirkstoffkombinationen
DE10209145A1 (de) * 2002-03-01 2003-09-04 Bayer Cropscience Ag Halogenbenzole
AU2003226774A1 (en) * 2002-04-05 2003-10-20 Basf Aktiengesellschaft Fungicidal mixtures based on benzamidoxime derivatives and a strobilurin derivative
ATE496536T1 (de) * 2002-04-10 2011-02-15 Basf Se Verfahren zur erhöhung der widerstandskraft von pflanzen gegen die phytotoxizität von agrochemikalien
DE10228104A1 (de) * 2002-06-24 2004-01-15 Bayer Cropscience Ag Fungizide Wirkstoffkombination
US8293751B2 (en) 2003-01-14 2012-10-23 Arena Pharmaceuticals, Inc. 1,2,3-trisubstituted aryl and heteroaryl derivatives as modulators of metabolism and the prophylaxis and treatment of disorders related thereto such as diabetes and hyperglycemia
AR045047A1 (es) 2003-07-11 2005-10-12 Arena Pharm Inc Derivados arilo y heteroarilo trisustituidos como moduladores del metabolismo y de la profilaxis y tratamiento de desordenes relacionados con los mismos
DE10337885A1 (de) 2003-08-18 2005-03-24 Bayer Cropscience Ag Verfahren zur Herstellung von α-Fluormalonsäuredialkylestern
DE10343872A1 (de) * 2003-09-23 2005-04-21 Bayer Cropscience Ag Suspensionskonzentrate
DE10347090A1 (de) 2003-10-10 2005-05-04 Bayer Cropscience Ag Synergistische fungizide Wirkstoffkombinationen
DE10349501A1 (de) 2003-10-23 2005-05-25 Bayer Cropscience Ag Synergistische fungizide Wirkstoffkombinationen
CA2560341A1 (en) 2004-04-30 2005-11-10 Jordi Tormo I Blasco Fungicidal mixtures
DE102004033525A1 (de) * 2004-07-08 2006-02-02 Lanxess Deutschland Gmbh Verbessertes Verfahren zur Herstellung kernfluorierter Aromaten
DE102004040702B4 (de) 2004-08-23 2019-03-28 Bayer Cropscience Aktiengesellschaft Verfahren zur Herstellung eines Dioxazin-Derivats
DE102004049761A1 (de) * 2004-10-12 2006-04-13 Bayer Cropscience Ag Fungizide Wirkstoffkombinationen
MY148521A (en) 2005-01-10 2013-04-30 Arena Pharm Inc Substituted pyridinyl and pyrimidinyl derivatives as modulators of metabolism and the treatment of disorders related thereto
DOP2006000010A (es) 2005-01-10 2006-07-31 Arena Pharm Inc Procedimiento para preparar eteres aromáticos
RU2430514C2 (ru) 2005-02-22 2011-10-10 Басф Се Композиция и способ повышения жизнеспособности растений
DE102005015677A1 (de) 2005-04-06 2006-10-12 Bayer Cropscience Ag Synergistische fungizide Wirkstoffkombinationen
DE102005026482A1 (de) 2005-06-09 2006-12-14 Bayer Cropscience Ag Wirkstoffkombinationen
MX2007015376A (es) 2005-06-09 2008-02-14 Bayer Cropscience Ag Combinaciones de productos activos.
CN100443463C (zh) * 2005-06-28 2008-12-17 沈阳化工研究院 取代的对三氟甲基苯醚类化合物及其制备与应用
DE102005035300A1 (de) * 2005-07-28 2007-02-01 Bayer Cropscience Ag Synergistische fungizide Wirkstoffkombinationen
US20080287426A1 (en) * 2005-10-28 2008-11-20 Steve Waterhouse Method of Inducing Resistance to Harmful Fungi
AU2007224578A1 (en) * 2006-03-10 2007-09-20 Basf Se Method for improving the tolerance of plants to chilling temperatures and/or frost
BRPI0708283A2 (pt) * 2006-03-14 2011-05-24 Basf Se método para induzir toleráncia contra bacterioses de plantas, e, uso das combinações
BRPI0708746A2 (pt) * 2006-03-24 2011-06-28 Basf Se uso de um composto ativo que inibe a cadeia respiratória mitocondrial, e, método para o combate de esca
DE102006023263A1 (de) 2006-05-18 2007-11-22 Bayer Cropscience Ag Synergistische Wirkstoffkombinationen
EP2489268A3 (en) 2006-09-18 2012-10-24 Basf Se Pesticidal mixtures comprising an anthranilamide insecticide and a fungicide
TW200845897A (en) 2007-02-06 2008-12-01 Basf Se Pesticidal mixtures
KR20100015796A (ko) 2007-04-23 2010-02-12 바스프 에스이 화학 작용제와 트랜스제닉 변형의 조합에 의한 식물 생산성의 증진
EP2000030A1 (de) * 2007-06-06 2008-12-10 Bayer CropScience AG Fungizide Wirkstoffkombinationen
EP2182806A2 (en) * 2007-06-29 2010-05-12 Basf Se Strobilurins for increasing the resistance of plants to abiotic stress
UA103008C2 (ru) 2007-09-26 2013-09-10 Басф Се Трехкомпонентные фунгицидные композиции, содержащие боскалид и хлороталонил
DE102007045920B4 (de) 2007-09-26 2018-07-05 Bayer Intellectual Property Gmbh Synergistische Wirkstoffkombinationen
AU2008340152B2 (en) * 2007-12-21 2012-06-07 Basf Se Method of increasing the milk and/or meet quantity of silage-fed animals
EP2100506A2 (en) 2009-01-23 2009-09-16 Bayer CropScience AG Uses of fluopyram
EA020314B9 (ru) 2009-03-25 2015-03-31 Байер Кропсайенс Аг Пестицидная комбинация биологически активных веществ
MX2012000566A (es) 2009-07-16 2012-03-06 Bayer Cropscience Ag Combinaciones sinergicas de principios activos con feniltriazoles.
WO2011026796A1 (en) 2009-09-01 2011-03-10 Basf Se Synergistic fungicidal mixtures comprising lactylates and method for combating phytopathogenic fungi
AU2011305525B2 (en) 2010-09-22 2016-08-18 Arena Pharmaceuticals, Inc. Modulators of the GPR119 receptor and the treatment of disorders related thereto
CA2818914A1 (en) 2010-12-20 2012-06-28 Basf Se Pesticidal active mixtures comprising pyrazole compounds
EP2481284A3 (en) 2011-01-27 2012-10-17 Basf Se Pesticidal mixtures
WO2012127009A1 (en) 2011-03-23 2012-09-27 Basf Se Compositions containing polymeric, ionic compounds comprising imidazolium groups
AR085587A1 (es) 2011-04-13 2013-10-09 Bayer Cropscience Ag Combinaciones de compuestos activos
AR085588A1 (es) 2011-04-13 2013-10-09 Bayer Cropscience Ag Combinaciones de compuestos activos
MX2014001866A (es) 2011-09-02 2015-04-16 Basf Se Mezclas agricolas que comprenden compuestos de arilquinazolinona.
CN102396484A (zh) * 2011-12-03 2012-04-04 陕西美邦农药有限公司 一种含异菌脲和甲氧基丙烯酸酯类的杀菌组合物
CN102640758B (zh) * 2012-04-24 2013-11-13 杭州宇龙化工有限公司 一种含有噻呋酰胺与氟嘧菌酯的杀菌组合物
CN103371153B (zh) * 2012-04-28 2016-12-14 陕西韦尔奇作物保护有限公司 含噻呋酰胺与甲氧基丙烯酸酯类的杀菌组合物
JP6279563B2 (ja) 2012-06-20 2018-02-14 ビーエーエスエフ ソシエタス・ヨーロピアBasf Se ピラゾール化合物およびピラゾール化合物を含む殺有害生物性混合物
US20150257383A1 (en) 2012-10-12 2015-09-17 Basf Se Method for combating phytopathogenic harmful microbes on cultivated plants or plant propagation material
BR112015014753B8 (pt) 2012-12-20 2020-03-03 Basf Agro Bv composições, uso de uma composição, método para o combate de fungos fitopatogênicos e uso dos componentes
EP2783569A1 (en) 2013-03-28 2014-10-01 Basf Se Compositions comprising a triazole compound
AR100015A1 (es) * 2013-07-08 2016-09-07 Arysta Lifescience Corp Procedimiento para preparar fluoxastrobin
EP2835052A1 (en) 2013-08-07 2015-02-11 Basf Se Fungicidal mixtures comprising pyrimidine fungicides
EP3046915A1 (en) 2013-09-16 2016-07-27 Basf Se Fungicidal pyrimidine compounds
WO2015036059A1 (en) 2013-09-16 2015-03-19 Basf Se Fungicidal pyrimidine compounds
CN104430366A (zh) * 2013-09-24 2015-03-25 中国中化股份有限公司 取代芳醚类化合物作为抗植物病毒剂的应用
CN105284832A (zh) * 2014-05-29 2016-02-03 深圳诺普信农化股份有限公司 杀菌组合物
EP2979549A1 (en) 2014-07-31 2016-02-03 Basf Se Method for improving the health of a plant
CN104186501A (zh) * 2014-09-22 2014-12-10 江苏省绿盾植保农药实验有限公司 一种含有叶菌唑和氟嘧菌酯的杀菌组合物及其应用
EP3209818B1 (de) 2014-10-24 2019-12-11 Basf Se Organische pestizid-teilchen
WO2016112075A1 (en) 2015-01-06 2016-07-14 Arena Pharmaceuticals, Inc. Methods of treating conditions related to the s1p1 receptor
EP2910126A1 (en) 2015-05-05 2015-08-26 Bayer CropScience AG Active compound combinations having insecticidal properties
BR112017027656B1 (pt) 2015-06-22 2023-12-05 Arena Pharmaceuticals, Inc. Hábito cristalino de placa livre de sal de l-arginina de ácido (r)-2-(7-(4- ciclopentil-3-(trifluorometil)benzilóxi)- 1,2,3,4-tetra-hidrociclo-penta[b]indol-3- il)acético, composição farmacêutica que o compreende, seus usos e método de preparação do mesmo
CN106543163A (zh) * 2016-11-08 2017-03-29 佛山市飞时达新材料科技有限公司 一种氟嘧菌酯半抗原的制备方法及其应用
EP3372079A1 (de) 2017-03-06 2018-09-12 Bayer CropScience Aktiengesellschaft Neue emulsionskonzentrate auf basis von agrochemischen wirkstoffen
US11952350B2 (en) 2019-04-18 2024-04-09 Upl Ltd. Process for the preparation of fungicidally active strobilurin compounds and intermediates thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02233602A (ja) 1989-03-08 1990-09-17 Hokko Chem Ind Co Ltd 除草剤
JP3188286B2 (ja) 1991-08-20 2001-07-16 塩野義製薬株式会社 フェニルメトキシイミノ化合物およびそれを用いる農業用殺菌剤
GB9307247D0 (en) 1993-04-07 1993-06-02 Zeneca Ltd Fungicidal compounds
ZW8594A1 (en) * 1993-08-11 1994-10-12 Bayer Ag Substituted azadioxacycbalkenes
DE4408005A1 (de) * 1993-08-11 1995-02-16 Bayer Ag Substituierte Azadioxacycloalkene
DE19501842A1 (de) * 1995-01-23 1996-07-25 Bayer Ag Substituierte Arylazadioxacycloalkene
DE19526047C1 (de) 1995-07-17 1997-03-06 Hoechst Ag Verfahren zur Herstellung sekundärer Arylphosphane

Also Published As

Publication number Publication date
IN187450B (nl) 2002-04-27
IN187520B (nl) 2002-05-11
CN1146550C (zh) 2004-04-21
HUP9900582A2 (hu) 1999-06-28
WO1997027189A1 (de) 1997-07-31
CZ231098A3 (cs) 1998-10-14
ZA97478B (en) 1997-07-30
AU720066B2 (en) 2000-05-25
US6103717A (en) 2000-08-15
PL327924A1 (en) 1999-01-04
IL124974A (en) 2001-04-30
BR9707160A (pt) 1999-04-06
US6407233B1 (en) 2002-06-18
ATE223407T1 (de) 2002-09-15
CN1072223C (zh) 2001-10-03
SK98998A3 (en) 1998-12-02
PT882043E (pt) 2003-01-31
DE59708129D1 (de) 2002-10-10
CN1209808A (zh) 1999-03-03
ID15839A (id) 1997-08-14
EP0882043B1 (de) 2002-09-04
CN1495175A (zh) 2004-05-12
CA2243591C (en) 2004-07-27
HK1017354A1 (en) 1999-11-19
FR06C0042I2 (nl) 2009-10-30
KR100383906B1 (ko) 2003-07-23
KR19990076939A (ko) 1999-10-25
RU2191186C2 (ru) 2002-10-20
CN1347878A (zh) 2002-05-08
SK283815B6 (sk) 2004-02-03
HU227488B1 (en) 2011-07-28
PL187756B1 (pl) 2004-10-29
HUP9900582A3 (en) 2000-02-28
NZ325869A (en) 1999-03-29
BG102622A (en) 1999-04-30
DE19602095A1 (de) 1997-07-24
CO4770925A1 (es) 1999-04-30
UA56156C2 (uk) 2003-05-15
CA2243591A1 (en) 1997-07-31
FR06C0042I1 (nl) 2007-01-12
NL350025I1 (nl) 2006-03-01
CL2004001128A1 (es) 2005-04-01
HK1045310A1 (zh) 2002-11-22
BG64178B1 (bg) 2004-03-31
CZ295548B6 (cs) 2005-08-17
ES2180021T3 (es) 2003-02-01
MX203302B (nl) 2001-07-26
MX9805742A (nl) 1999-01-31
AU1312197A (en) 1997-08-20
JP3262277B2 (ja) 2002-03-04
TR199801392T2 (xx) 1998-10-21
JP2000504321A (ja) 2000-04-11
CN1213037C (zh) 2005-08-03
TW349001B (en) 1999-01-01
EP0882043A1 (de) 1998-12-09
IL124974A0 (en) 1999-01-26

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