# US 8,785,657 B2 · Processes for the preparation of pyrazoles

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- Number: US 8,785,657 B2
- Document ID: US8785657B2
- Status: Granted
- Kind: B2
- Application number: 13/621,686
- Filed: 2012-09-17
- Published: 2013-01-24
- Granted: 2014-07-22
- Earliest claimed: 2007-06-27
- Assignees: Syngenta Crop Protection AG
- Applicants: Syngenta Crop Protection, LLC
- Inventors: Martin Charles Bowden; Brian David Gott; David Anthony Jackson; Iacob Eremia Gutu
- Web page: https://patentgrep.com/patent/US8785657B2

## CPC

- C07C 251/76: to carbon atoms of a saturated carbon skeleton
- C07D 231/12: with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
- C07D 231/14: with 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
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)

## Abstract

The present invention relates to novel processes for the production of compounds of formula wherein Hal and Hal′ are independently selected from Cl and F, and R1 is selected from Cl, F and H.

## Claims

### Claim 1

A compound of formula (I)
wherein Hal and Hal′ are independently selected from Cl and F, and R1 is H.

### Claim 2 (depends on 1)

A compound according to claim 1 of formula IX