Process and intermediates for the preparation of certain nematicidal sulfonamides

US11897854B2 · kind B2 · utility

Assignee

• CORTEVA AGRISCIENCE LLC · US

Inventors

• Albert Loren Casalnuovo · Wilmington, US
• Ty Wagerle · Bear, US
• Jun Yan · Newark, US
• ERIN DEMKO · Wilmington, US
• Matthew Richard Oberholzer · Wilmington, US
• Rafael Shapiro · Wilmington, US

Key dates

• Filing date: Apr 19, 2022
• Grant date: Feb 13, 2024
• Expiry date: Apr 19, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D471/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention provides a method for preparing a compound of Formula C, Formula D, or Formula F:wherein each R1, R2, and R3 is independently H, SFs, N(C1-C8 alkyl)(C1-C8 alkyl), C(═S)N(C1-C8 alkyl)(C1-C8 alkyl), SO2N(C1-C8 alkyl)(C1-C8 alkyl), OSO2(C1-C8 alkyl), OSO2N(C1-C8 alkyl)(C1-C8 alkyl), N(C1-C8 alkyl)SO2(C1-C8 alkyl), or C1-C8 alkyl, C1-C8 haloalkyl, C2-C8 alkenyl, C2-C8 alkynyl, C3-C10 cycloalkyl, C3-C10 halocycloalkyl, C4-C10 alkylcycloalkyl, C4-C10 cycloalkylalkyl, C6-C14 cycloalkylcycloalkyl, C5-C10 alkylcycloalkylalkyl, C3-C8 cycloalkenyl, C1-C8 alkoxy, C1-C8 haloalkoxy, C3-C8 cycloalkoxy, C3-C8 halocycloalkoxy, C4-C10 cycloalkylalkoxy, C2-C8 alkenyloxy, C2-C8 alkynyloxy, C1-C8 alkylthio, C1-C8 alkylsulfinyl, C1-C8 alkylsulfonyl, C3-C8 cycloalkylthio, C3-C8 cycloalkylsulfinyl, C3-C8 cycloalkylsulfonyl, C4-C10 cycloalkylalkylthio, C4-C10 cycloalkylalkylsulfinyl, C4-C10 cycloalkylalkylsulfonyl, C2-C8 alkenylthio, C2-C8 alkenylsulfinyl, C2-C8 alkenylsulfonyl, C2-C8 alkynylthio, C2-C8 alkynylsulfinyl, C2-C8 alkynylsulfonyl, or phenyl; ortwo of R1, R2, and R3 on adjacent ring atoms may be taken together to form a 5-to 7-membered carbocyclic or heterocyclic ring, each…