Process for electrophilic aromatic substitution

US6399835B1 · kind B1 · utility

Assignee

• BROMINE COMPOUNDS LTD. · IL

Inventors

• Ariel Ewenson · Omer, IL
• David Itzhak · Omer, IL
• Miriam Freiberg Bergstein · Omer, IL
• Asher Shushan · Beer Sheva, IL
• Bertha Croitoru · Beer Sheva, IL
• David Beneish · Omer, IL
• Naim Faza

Key dates

• Filing date: Apr 6, 2000
• Grant date: Jun 4, 2002
• Expiry date: Apr 6, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Processes for the electrophilic substitution of aromatic compounds, such as alkylation, with a desired substituent are disclosed. The processes include contacting the aromatic compound, a precursor of the desired substituent and an aqueous reagent containing zinc halide at elevated temperatures such as above 50° C.