Polyhalogenated carboxylic acids

DETAILED DESCRIPTION We claim: 1.
A compound of the formula ##STR6## wherein X.
sub.
1 is selected from the group consisting of hydrogen, fluorine, chlorine and bromine, X.
sub.
2 is selected from the group consisting of fluorine, chlorine and bromine, X.
sub.
3 is selected from the group consisting of chlorine, bromine and iodine and R is hydroxy in any of the possible isomer forms.
2.
A compound of claim 1 in its diastereoisomeric form or mixtures thereof selected from the group consisting of 2,2-dimethyl-3S-(1',2',2',2'-tetrabromoethyl)-cyclopropane-1R-carboxylic acid, 2,2-dimethyl-3S-(1',2'-dibromo-2',2'-dichloroethyl)-cyclopropane-1R-carbox ylic acid, 2,2-dimethyl-3R-(1',2'-dichloro-2',2'-dibromoethyl)-cyclopropane-1R-carbox ylic acid, 2,2-dimethyl-3S-(1',2'-dichloro-2',2'-dibromoethyl)-cyclopropane-1R-carbox ylic acid and 2,2-dimethyl-3S-(1',2'-dibromo-2',2'-difluoroethyl)-cyclopropane-1R-carbox ylic acid.
3.
A compound of claim 1 in the form of its diastereoisomers or mixtures thereof which is 2,2-dimethyl-3R-(1',2',2',2'-tetrabromoethyl)-cyclopropane-1R-carboxylic acid.
4.
A compound of claim 1 in the form of its diastereoisomers or mixtures thereof which is 2,2-dimethyl-3R-(1',2'-dibromo-2',2'-dichloroethyl)-cyclopropane-1R-carbox ylic acid.
5.
A compound of claim 1 in the form of diastereoisomers and mixtures thereof which is 2,2-dimethyl-3S-(1',2',2',2'-tetrachloroethyl)-cyclopropane-1R-carboxylic acid.
6.
A compound of claim 1 in the form of its diastereoisomers and mixtures thereof which is 2,2-dimethyl-3R-(1',2',2',2'-tetrachloroethyl)-cyclopropane-1R-carboxylic acid.
7.
A compound of claim 1 in the form of its diastereoisomers and mixtures there of which is 2,2-dimethyl-3R-(1',2'-dibromo-2',2' difluoroethyl)-cyclopropane-1R-carboxylic acid.
8.
A compound of claim 1 in the form of its diastereoisomers and mixtures there of which is 2,2-dimethyl-3R-(1',2'-dibromo-2'-chloro 2'(RS)fluoroethyl)-cyclopropane-1R-carboxylic acid.




Description:
OBJECTS OF THE INVENTION It is an object of the invention to provide the novel cyclopropane carboxylic acids and their functional derivatives of formula I and a process for their preparation