Patent · US Expired

Method for producing cyclopentanone and cyclopentene-1-carboxylic acid and their esters

US6316659A · kind A · utility

0Cited by

2References

12Claims

0Family size

Assignee

BASF SE

Inventors

Rolf Fischer · Heidelberg, DE
Shelue Liang · Ludwigshafen, DE
Rolf Pinkos · Bad Dürkheim, DE
Frank Stein · Bad Dürkheim, DE

Key dates

Filing date	Mar 7, 2000
Grant date	Nov 13, 2001
Priority date	—
Expiry date	Mar 7, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/333
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing cyclopentanone and cyclopentene-1-carboxylic acid or an ester thereof of the formula I ##STR1## where R is hydrogen or an aliphatic radical having 1-6 carbon atoms or a cycloaliphatic, araliphatic or aromatic radical having 6-12 carbon atoms comprises heating a compound of the formula II EQU X--(CH.sub.2).sub.4 --COOR II where X is formyl or hydroxymethyl and R is defined as above, and/or a compound which is converted into a compound of the formula II by reaction with water or alcohols ROH under the reaction conditions to from 200 to 450.degree. C. in the gas or liquid phase in the presence of a heterogeneous oxidic catalyst.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.