EP 2451778 A1 20120516 - STABLE CRYSTALLINE POLYMORPH OF 2-(2-CHLORO-4-MESYL- BENZOYL)-CYCLOHEXANE/-1,3-DIONE AND PROCESS FOR PREPARING THE SAME
Title (en)
STABLE CRYSTALLINE POLYMORPH OF 2-(2-CHLORO-4-MESYL- BENZOYL)-CYCLOHEXANE/-1,3-DIONE AND PROCESS FOR PREPARING THE SAME
Title (de)
STABILES KRISTALLINES POLYMORPH VON 2-(2-CHLORO-4-MESYL- BENZOYL)-CYCLOHEXAN/-1,3-DION UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
POLYMORPHE CRISTALLIN STABLE DE 2-(2-CHLORO-4-MÉSYL-BENZOYL)-CYCLOHEXANE-1,3-DIONE, ET PROCÉDÉ D'ÉLABORATION CORRESPONDANT
Publication
Application
Priority
- PT 2010000028 W 20100706
- PT 10466409 A 20090707
Abstract (en)
[origin: WO2011005127A1] The present invention relates to a new stable crystalline polymorph of 2-(2-chloro-4-mesyl-benzoyl)-cyclohexane-1,3-dione and to a process for preparing the same. More particularly, it relates to compositions having said polymorph for controlling unwanted plants. The process for preparing crystalline polymorph of 2-(2-chloro-4-mesyl-benzoyl)-cyclohexane-1,3-dione comprising the following steps of: 1) preparation of 4-sulfomethyl-2-chloro benzoyl chloride; 2)preparation of enol ester derivative; 3)rearrangement of enol ester derivative to 2-(2-chloro-4-mesyl-benzoyl)-cyclohexane-1,3-dione; and 4) purification of 2-(2-chloro-4-mesyl-benzoyl)-cyclohexane-1,3-dione. The polymorphic structure is assessed using infra-red and Raman spectra and X-ray crystallography data. The polymorph has a powder X-Ray diffraction spectrum with characteristic peaks at 2? = 17.2°, 17.6°, 19.1°, 21.0°, 26.0° and 28.7°. A stable formulation of the above mentioned polymorph is used as herbicide.
IPC 8 full level
C07C 317/24 (2006.01); A01N 41/10 (2006.01); C07C 315/06 (2006.01)
CPC (source: EP)
A01N 41/10 (2013.01); C07C 315/06 (2013.01); C07C 317/24 (2013.01); C07B 2200/13 (2013.01); C07C 2601/14 (2017.04)
Citation (search report)
See references of WO 2011005127A1
Citation (examination)
- US 7211697 B2 20070501 - EBLE AXEL [DE], et al
- EP 0186117 A2 19860702 - STAUFFER CHEMICAL CO [US]
- BAVIN M: "POLYMORPHISM IN PROCESS DEVELOPMENT", CHEMISTRY & INDUSTRY, SOCIETY OF CHEMICAL INDUSTRY. LONDON, GB, vol. 21, 21 August 1989 (1989-08-21), pages 527 - 529, XP001180136, ISSN: 0009-3068
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011005127 A1 20110113; EP 2451778 A1 20120516; PT 104664 A 20110107
DOCDB simple family (application)
PT 2010000028 W 20100706; EP 10735359 A 20100706; PT 10466409 A 20090707