US 5,710,282 AGranted

Process for preparing substituted aryls

AssigneeHoechst Celanese Corporation

InventorsKathleen Nelson Juneau, Richard Vicari, Carl David Murphy

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Abstract

The present invention provides a novel one-step process for preparing substituted aryls which can be used as end-capping monomers for preparing highly branched macromolecule polymers that have highly controlled molecular architectures. The process comprises the steps of (a) reacting an aromatic acid with an activating carbodiimide for a sufficient period of time and under suitable conditions of temperature and pressure to form an activated aromatic intermediate, and (b) reacting said intermediate with a suitable nucleophile for a sufficient period of time and under suitable conditions of temperature and pressure to form said substituted aryl compound.

Claims3

Dependent claims

A process for preparing an aryl compound having the formula ##STR17## wherein R.sub.1 -R.sub.7 are each independently selected from the group consisting of

(a) hydrogen
(b) alkyl C.sub.1 -C.sub.20
(c) alkoxy alkyl having 1 to 8 carbon atoms in both alkoxy group and alkyl group
(d) phenyl
(e) naphthyl, and
(f) indole,
which comprises the steps of (a) reacting a phenyl dicarboxylic acid with a carboxylic acid activating functionally for a sufficient period of time and at a temperature of from about -20.degree. C. to about 120.degree. C. to form an activated intermediate, and (b) reacting said activated intermediate with a suitable nucleophile for a sufficient period of time and at a temperature of from about -20.degree. C. to about 120.degree. C. to form said aryl compound.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/516,768Filed 18 Aug 1995
Granted: 20 Jan 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

C07C 235/52
With carbon atoms of carboxamide groups and singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring:…
C07C 231/02
Preparation of carboxylic acid amides: from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
C07D 209/20
Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals:…
C07C
Acyclic or carbocyclic compounds

Family

No related US applications are recorded in the indexed filing history.

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