Process for the preparation of bistriphenylsilyl chromate

US5698723A · kind A · utility

Assignees

• CHINA PETROCHEMICAL CORPORATION
• RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC · CN

Inventors

• Longxiu Dai · Beijing, CN
• Qiwei Duan · Beijing, CN
• Hongbo Ji · Beijing, CN
• Xiaoyuan Wang · Beijing, CN
• Jinqiang Mo · Beijing, CN
• Jinfeng Wang · Shanghai, CN
• Hongmei Liu · Beijing, CN
• Xiuqin Li · Beijing, CN
• Jiuhua Chen · Beijing, CN
• Ping Gao · Hong Kong, CN

Key dates

• Filing date: Aug 16, 1996
• Grant date: Dec 16, 1997
• Expiry date: Aug 16, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/0836
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a process for the preparation of bistriphenylsilyl chromate, wherein triphenylchlorosilane, potassium dichromate and any one selected from alkali metal oxides, alkali hydroxides and alkali metal carbonates are reacted in, as solvent, a mixture of glacial acetic acid and a hydrocarbon solvent at a certain temperature, whereby bistriphenylsilyl chromate having high purity can be obtained with high yield.