# US 5,352,843 A · Preparation of .beta.-naphthyl benzyl ether

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- Number: US 5,352,843 A
- Document ID: US5352843A
- Status: Granted
- Kind: A
- Application number: 08/069,154
- Filed: 1993-05-28
- Granted: 1994-10-04
- Earliest claimed: 1992-06-06
- Assignees: BASF SE
- Inventors: Rainer Dyllick-Brenzinger; Ulf Baus
- Web page: https://patentgrep.com/patent/US5352843A

## CPC

- C07C 41/16: by reaction of esters of mineral or organic acids with hydroxy or O-metal groups
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

A process for preparing .beta.-naphthyl benzyl ether comprises reacting .beta.-naphthol essentially in the absence of water with an alkali metal carbonate or an alkaline earth metal carbonate and benzyl chloride in an inert water-miscible solvent at from 0.degree. to 200.degree. C.

## Claims

### Claim 1

A process for preparing .beta.-naphthyl benzyl ether which comprises:
reacting .beta.-naphthol essentially in the absence of water with an alkali metal carbonate or an alkaline earth metal carbonate and benzyl chloride in an inert water-miscible solvent at from 60.degree. C. to 200.degree. C.; and
after the reaction has ended, admixing the reaction mixture with water at a temperature of 30.degree. C. to 110.degree. C. only to the onset of crystallization of the .beta.-naphthyl benzyl ether product and thereafter cooling the reaction mixture to a temperature of from 0.degree. C. to 25.degree. C. to cause crystallization and precipitation of said ether product.

### Claim 2 (depends on 1)

A process for preparing .beta.-naphthyl benzyl ether as claimed in claim 1, wherein the reaction is carried out at from 60.degree. to 150.degree. C.

### Claim 3 (depends on 1)

A process for preparing .beta.-naphthyl benzyl ether as claimed in claim 1, wherein the inert water-miscible solvent used is a ketone, a cyclic ether, a nitrile, a sulfoxide or a formamide.

### Claim 4 (depends on 1)

A process as claimed in claim 1, wherein the reaction is carried out at a temperature of from 80.degree. to 120.degree. C. and at atmospheric pressure.

### Claim 5 (depends on 1)

A process as claimed in claim 1, wherein the inert solvent is selected from the group consisting of N-methylpyrrolidone, dimethyl formamide and dimethylacetamide.