# US 5,710,282 A · Process for preparing substituted aryls

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- Number: US 5,710,282 A
- Document ID: US5710282A
- Status: Granted
- Kind: A
- Application number: 08/516,768
- Filed: 1995-08-18
- Granted: 1998-01-20
- Earliest claimed: 1995-08-18
- Assignees: Hoechst Celanese Corporation
- Inventors: Kathleen Nelson Juneau; Richard Vicari; Carl David Murphy
- Web page: https://patentgrep.com/patent/US5710282A

## CPC

- C07C 235/52: having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by carboxyl groups
- C07C 231/02: from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
- C07D 209/20: substituted additionally by nitrogen atoms, e.g. tryptophane
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The process as set forth in claim 1 wherein the aryl compound has the formula ##STR18##

### Claim 3 (depends on 1)

The process as set forth in claim 1 wherein the aryl compound has the formula ##STR19##