3-Chloro-2-polyfluoroalkyl- and 3-chloro-6-nitro-2-polyfluoroalkylchromones were synthesized. These compounds react with N(2)H(4)(.)2HCl on boiling in ethanol to form 4-chloro-3(5)-(2-hydroxyaryl)-5(3)-polyfluoroalkylpyrazoles.
Disclosed are compounds of Formula 1, including all stereoisomers, N-oxides, and salts thereof,
wherein
Q, Z, R
2
, R
3
and m are as defined in the disclosure.
Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling undesired vegetation comprising contacting the undesired vegetation or its environment with an effective amount of a compound or a composition of the invention.
[EN] PYRIMIDINYLOXY BENZENE DERIVATIVES AS HERBICIDES<br/>[FR] DÉRIVÉS DE PYRIMIDINYLOXY BENZÈNE À UTILISER EN TANT QU'HERBICIDES
申请人:DU PONT
公开号:WO2015108779A1
公开(公告)日:2015-07-23
Disclosed are compounds of Formula (1), including all stereoisomers, N-oxides, and salts thereof, wherein Q, Z, R2, R3 and m are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula (1) and methods for controlling undesired vegetation comprising contacting the undesired vegetation or its environment with an effective amount of a compound or a composition of the invention.
Reactions of 2-polyfluoroalkylchromones with aliphatic diamines
作者:V. Ya. Sosnovskikh、V. A. Kutsenko
DOI:10.1007/bf02496279
日期:1999.4
Abstract2-Polyfluoroalkylchromones react with aliphatic 1,2-diamines to give 2,3-dihydro-1H-1,4-diazepines. A similar reaction with 1,3-diaminopropane yieldsN,N′-trimethylenebis(2-hydroxyacetophenomines) as a result of scission of the original chromones.
Reaction of Polyhaloalkyl-Substituted Chromones, Pyrones, and Furanones with Salicylaldehydes as a Direct Route to Fused 2<i>H</i>-Chromenes
作者:Vyacheslav Ya. Sosnovskikh、Vladislav Yu. Korotaev、Dmitry L. Chizhov、Igor B. Kutyashev、Danil S. Yachevskii、Olga N. Kazheva、Oleg A. Dyachenko、Valery N. Charushin
DOI:10.1021/jo060459x
日期:2006.6.1
Polyhaloalkyl-substituted chromones, γ-pyrones, and β-furanones react with salicylaldehydes in the presence of piperidine to give a wide variety of fused 2H-chromenes in good yields. This novel annulation reaction presumably proceeds by a tandem intermolecular oxa-Michael addition and subsequent intramolecular Mannich condensation.
Synthesis and some properties of 2-(polyfluoroalkyl)chroman-4-ols and 2-(polyfluoroalkyl)chroman-4-ones
作者:V. Ya. Sosnovskikh、R. A. Irgashev、B. I. Usachev
DOI:10.1007/s11172-009-0345-3
日期:2009.12
Reduction of 2-(polyfluoroalkyl)chromones by sodium borohydride in methanol gives cis-2-(polyfluoroalkyl)chroman-4-ols in high yields, which are easily oxidized by chromic acid to 2-(polyfluoroalkyl)chroman-4-ones. The latter are of interest as the starting materials for the preparation of novel RF-containing chromane derivatives.