Invention Grant
- Patent Title: Process for preparing gamma-cyhalothrin
- Patent Title (中): 制备γ-氯氟氰菊酯的方法
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Application No.: US10546138Application Date: 2004-02-23
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Publication No.: US07507852B2Publication Date: 2009-03-24
- Inventor: Stephen Martin Brown , Brian David Gott
- Applicant: Stephen Martin Brown , Brian David Gott
- Applicant Address: GB
- Assignee: Syngenta Limited
- Current Assignee: Syngenta Limited
- Current Assignee Address: GB
- Agent Rebecca A. Howard
- Priority: GB0304132.4 20030224
- International Application: PCT/GB2004/000726 WO 20040223
- International Announcement: WO2004/074237 WO 20040902
- Main IPC: C07C253/30
- IPC: C07C253/30
Abstract:
A process for the preparation of gamma-cyhalothrin comprising steps of a) chlorinating 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid to give 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid chloride and b) esterifying 1R cis-Z 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cyclopropanecarboxylic acid chloride with the (S)-cyanohydrin of 3-phenoxy benzaldehyde (III).
Public/Granted literature
- US20060148892A1 Process for preparing gamma-cyhalothrin Public/Granted day:2006-07-06
Information query
