Patent · US Active

Process for the preparation of 3-alkylsulfinylbenzoyl derivatives

US8455657B2 · kind B2 · utility

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3References

13Claims

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Assignee

BAYER CROPSCIENCE AKTIENGESELLSCHAFT · DE

Inventors

Mark James Ford · Nordenstadt, DE
Jan-Peter Schmidt · Folsom, US
Helmut Kohlhepp · Mörfelden, DE

Key dates

Filing date	Dec 22, 2011
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Dec 22, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/16
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is described for the preparation of 3-alkylsulfinylbenzoyl derivatives of the formula (IIIa) by reaction of 3-alkylsulfinylbenzoic acids of the formula (Ib) with compounds of the formula (II) in the presence of a chlorinating agent and a base.In the formulae specified above, Y is a radical such as pyrazolyl and cyclohexanedionyl. R1, R2 and R3 are radicals such as halogen, nitro, cyano and alkyl.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.