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1. WO2020139740 - PREPARATION OF SULFONAMIDE HERBICIDE PROCESS INTERMEDIATES

Publication Number WO/2020/139740
Publication Date 02.07.2020
International Application No. PCT/US2019/067737
International Filing Date 20.12.2019
IPC
C07D 213/12 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
06containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
08Preparation by ring-closure
09involving the use of ammonia, amines, amine salts, or nitriles
12from unsaturated compounds
C07D 213/70 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
62Oxygen or sulfur atoms
70Sulfur atoms
C07C 321/08 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
321Thiols, sulfides, hydropolysulfides or polysulfides
02Thiols having mercapto groups bound to acyclic carbon atoms
08of an acyclic unsaturated carbon skeleton
CPC
C07C 319/14
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
319Preparation of thiols, sulfides, hydropolysulfides or polysulfides
14of sulfides
C07C 323/60
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
323Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
50containing thio groups and carboxyl groups bound to the same carbon skeleton
51having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
60with the carbon atom of at least one of the carboxyl groups bound to nitrogen atoms
C07D 213/12
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
06containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
08Preparation by ring-closure
09involving the use of ammonia, amines, amine salts, or nitriles
12from unsaturated compounds
C07D 213/70
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
213Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
02having three double bonds between ring members or between ring members and non-ring members
04having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
60with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
62Oxygen or sulfur atoms
70Sulfur atoms
Applicants
  • CORTEVA AGRISCIENCE LLC [US]/[US]
Inventors
  • OPPENHEIMER, Jossian
  • OBER, Matthias S.
  • ONDARI, Mark E.
  • GULLO, Michael
  • DEVARAJ, Jayachandran
  • HAZARI, Amaruka
  • KRUPER, Will
Agents
  • KUNZ, Nicholas M.
Priority Data
62/785,34327.12.2018US
62/806,17615.02.2019US
62/835,68918.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PREPARATION OF SULFONAMIDE HERBICIDE PROCESS INTERMEDIATES
(FR) PRÉPARATION D'INTERMÉDIAIRES DE TRAITEMENT HERBICIDE À BASE DE SULFONAMIDE
Abstract
(EN)
Improved methods for preparing chemical precursors to sulfonyl chloride III, which are important intermediates in the preparation of pyroxsulam herbicide are provided. Specifically, these precursors are compounds of Formulas VII and/or VIII, and IX, wherein R is a C1-C6 alkyl, R1 is a C1-C6 alkyl, X is Cl or OH, Y is halogen, OH, or OR2, and R2 is a C1-C6 alkyl.
(FR)
L'invention concerne des procédés améliorés de préparation de précurseurs chimiques au chlorure de sulfonyle III, qui sont des intermédiaires importants dans la préparation d'un herbicide, le pyroxsulam. Spécifiquement, ces précurseurs sont des composés des formules VII et/ou VIII et IX, dans lesquelles R représente un groupe alkyle en C1-C6, R1 représente un groupe alkyle en C1-C6, X représente Cl ou OH, Y représente halogène, OH ou OR2, et R2 représente un groupe alkyle en C1-C6.
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