Preparation of cyclobutarenes via the steam pyrolysis of aromatic derivatives

US5093541A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• George J. Quarderer · Midland, US
• Mark J. Beitz · Appleton, US
• Fred C. Stone · Midland, US
• Patrick M. O'Donnell · Midland, US

Key dates

• Filing date: May 25, 1989
• Grant date: Mar 3, 1992
• Expiry date: May 25, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2602/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Cyclobutarenes are prepared by pyrolyzing a suitable benzene, naphthalene, or pyridine derivative in the presence of an amount of steam effective to substantially reduce the partial pressure of the pyrolyzing compound.