Process for producing di(aryloxy)alkane
US5041604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Jun 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a high quality di(aryloxy)alkane with a high yield by the use of readily commercially available materials, without using any particular solvent or agent and by means of a simple operation and a general apparatus is provided, which process comprises subjecting a halogenated alkane of the formula (II) EQU X--A--Y (II) wherein X and Y each represent a halogen atom and A represents a lower alkylene group, and a phenol of the formula (III) ##STR1## wherein R.sub.1 to R.sub.5 each are same or different, represent hydrogen, halogen, lower alkyl, lower alkoxy, carboxylic acid salt, acyl or nitro group, and may form a ring in conjunction of two adjacent groups, PA0 to condensation reaction in the presence of an alkali in an aqueous medium to form a di(aryloxy)alkane of the formula (I) ##STR2## and is characterized (i) by carrying out the condensation reaction in a molar ratio of the compound of the formula (II): the phenol of the formula (III): the alkali in terms of monovalent base of 1:1.5 to 3.0:1.5 to 3.0; or PA0 (ii) by carrying out the condensation reaction of the above (i) and adjusting the quantity of the aqueous medium phase after completion of the reaction …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.