2-氨基苯磺酰胺(1)与烯丙基,甲基,2-氯乙基或3-氯丙基异氰酸酯的反应得到2-(甲基脲基)-,2-(烯丙基脲基)-,2-(2'-氯乙基脲基)-和2-(3 '-氯丙基脲基)苯磺酰胺3a,b和7a,b的收率极高。在DMF的回流温度下处理3a,b,以良好的产率得到2 H -1,2,4-苯并噻二嗪-3(4 H)-1,1,1-二氧化物(4)。然而,当化合物7a,b在2-丙醇中回流时,3-(2'-氨基乙氧基)-2 H -1,2,4-苯并噻二嗪1,1-二氧化物(11a)和3-(3'-氨基丙氧基) -2高以盐酸盐10a,b的形式分别以87%和78%的产率获得了1,2,4-苯并噻二嗪1,1-二氧化物(11b)。在乙醇中加热11b,得到2 H -1,2,4-苯并噻二嗪-3(4 H)-1,1-二氧化物和3-(3'-氨基丙氧基)-2 H -1,2,4的二聚体形式。-苯并噻二嗪1,1-二氧化物(12),产率为5
2-氨基苯磺酰胺(1)与烯丙基,甲基,2-氯乙基或3-氯丙基异氰酸酯的反应得到2-(甲基脲基)-,2-(烯丙基脲基)-,2-(2'-氯乙基脲基)-和2-(3 '-氯丙基脲基)苯磺酰胺3a,b和7a,b的收率极高。在DMF的回流温度下处理3a,b,以良好的产率得到2 H -1,2,4-苯并噻二嗪-3(4 H)-1,1,1-二氧化物(4)。然而,当化合物7a,b在2-丙醇中回流时,3-(2'-氨基乙氧基)-2 H -1,2,4-苯并噻二嗪1,1-二氧化物(11a)和3-(3'-氨基丙氧基) -2高以盐酸盐10a,b的形式分别以87%和78%的产率获得了1,2,4-苯并噻二嗪1,1-二氧化物(11b)。在乙醇中加热11b,得到2 H -1,2,4-苯并噻二嗪-3(4 H)-1,1-二氧化物和3-(3'-氨基丙氧基)-2 H -1,2,4的二聚体形式。-苯并噻二嗪1,1-二氧化物(12),产率为5
[EN] HERBICIDALLY ACTIVE PYRIDYL-/PYRIMIDYL-PYRIMIDINE DERIVATIVES<br/>[FR] DÉRIVÉS DE PYRIDYLE-/PYRIMIDYLE-PYRIMIDINE À ACTIVITÉ HERBICIDE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2019057720A1
公开(公告)日:2019-03-28
The present invention relates to herbicidally active pyridyl-/pyrimidyl-pyridine derivatives, as well as to processes and intermediates used for the preparation of such derivatives. The invention further extends to herbicidal compositions comprising such derivatives, as well as to the use of such compounds and compositions in controlling undesirable plant growth: in particular the use in controlling weeds, in crops of useful plants.
Compounds of formula (I)
or stereoisomers or pharmaceutically acceptable salts thereof,
wherein W, R1, R2 and R3 have the meanings as indicated in the specification, are useful for treating conditions mediated by activation of the adenosine A2A receptor, especially inflammatory or obstructive airways diseases. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
The present invention relates to the use of the compound of formula (I), wherein the variables are defined according to the description, for controlling unwanted vegetation. Further the invention relates to novel compounds of the formula (I),compositions comprising them a method for controlling unwanted vegetation which comprises allowing a herbicidal effective amount of at least one azine of the formula (I) to act on plants, their seed and/or their habitat.