Processes for the preparation of pesticidal compounds and novel intermediates thereof
US6812347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2003 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P33/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a compound of the formula (I): wherein R1 is CN or CSNH2; X is N or CR4; R2 and R4 are each independently hydrogen or chloro; R3 is halo, haloalkyl, haloalkoxy or —SF5; R5 and R6 are each independently alkyl and n is 0, 1 or 2; said process comprising reacting a compound of the formula (II): wherein the symbols are as defined above and W is H, with an alkylating agent of the formula (III):R6—Y  (III)wherein R6 is as defined above and Y is a leaving group. The process may also be conducted by reacting a compound of formula (II) initially with an inorganic salt or an organic base, and reacting the resultant salt of the compound of formula (II) with the alkylating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.