摘要:
This invention is directed to compounds and intermediates of Formulae 6 and 3, useful in preparing herbicidal sulfonamides of Formula 1, including all geometric and stereoisomers thereof, and agricultural salts thereof. wherein the substituents are defined in the specification.
摘要:
The present invention relates to a compound of Formula 3 wherein X is H, F or Cl; Y is F or Cl; R1 is C1-C3 haloalkyl, C2-C4 alkoxyalkyl; C2-C6 haloalkoxyalkyl or C2-C6 cyanoalkyl; R2 is H, C1-C4 alkyl, C1-C4 haloalkyl, C3-C4 alkenyl, C3-C4 alkynyl, C2-C4 alkoxyalkyl, C2-C4 alkylcarbonyl or C2-C4 alkoxycarbonyl; R3 is H or OH; and R4 is H, F or Cl; provided that when R3 is H then R4 is F or Cl and when R3 is OH then R4 is H.
摘要:
A method for preparing a fused oxazinone is disclosed in which (1) a carboxylic acid is contacted with a sulfonyl chloride in the presence of an optionally substituted pyridine compound, the nominal mole ratio of sulfonyl chloride to carboxylic acid being from about 0.75 to 1.5; (2) the mixture prepared in (1) is contacted with an ortho-amino aromatic carboxylic acid in the presence of an optionally substituted pyridine compound, the nominal mole ratio of the ortho-amino aromatic carboxylic acid to carboxylic acid charged in (1) being from about 0.8 to 1.2; and (3) additional sulfonyl chloride is added to the mixture prepared in (2), the nominal mole ratio of additional sulfonyl chloride added in (3) to carboxylic acid charged in (1) being at least about 0.5. Also disclosed is a method for preparing a compound of Formula III, using a compound of Formula 1a that is characterized by preparing the fused oxazinone of Formula 1a by the method above, using a compound of the formula LS(O)2Cl as the sulfonyl chloride, a compound of Formula 2′ as the carboxylic acid, and a compound of Formula 5′ as the ortho-amino aromatic carboxylic acid (FORMULA 1a) (FORMULA III) (FORMULA 2′) (FORMULA 5′) wherein L, X, Y and R1 through R9 are as defined in the disclosure