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US 2010/0213421 A1Published application
Diketopyrrolopyrrole Cocrystals
AssigneeClariant Finance (BVI) Limited
InventorsMatthias Ganschow, Uwe Benner, Sascha Steinhauer
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Abstract
The invention relates to cocrystals of compounds of the formulae (I), (II) and (III), obtainable by reacting 1 mol of a succinic diester with 2 mol of a mixture of nitriles A-CN and B-CN, where A-CN and B-CN are present in the nitrile mixture in a molar ratio of 90:10 to 30:70 relative to one another, and where A-CN is 2-chlorobenzonitrile and B-CN is 4-X-benzonitrile where X=chlorine, methyl or nitrile.
Claims9
A mixed crystal comprising compounds of formula (I), (II) and (III),
- obtained by reacting 1 mol of a succinic diester with 2 mol of a mixture of nitriles A-CN and B-CN, in a molar ratio of 90:10 to 30:70 between the A-CN and B-CN in the nitrile mixture, A-CN being 2-chlorobenzonitrile and B-CN being 4-X-benzonitrile where X=chlorine, methyl or nitrile.
Dependencies are inferred from the claim text.