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US 4,388,472 AGranted
Substituted diphenyl ethers
AssigneeImperial Chemical Industries PLC
InventorsDavid Cartwright, David J. Collins
Life of this patent
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Abstract
A compound of the formula: ##STR1## and salts and esters thereof, useful as intermediates for the preparation of compounds of the formula ##STR2## wherein R.sup.1 is an alkyl group optionally substituted by one or more fluorine atoms or by an optionally substituted phenyl group R.sup.2 is No.sub.2 or Cl and R.sup.6 is a hydrogen atom or an alkyl group of 1 to 4 carbon atoms.
Claims2
A compound of the formula:
- ##STR17## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
A compound of the formula:
- ##STR18## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.