Alkylation process

US7030285B2 · kind B2 · utility

Assignee

• Optatech Corporation · FI

Inventors

• Adriana De Stefanis · Monterotondo, IT
• Giorgio Perez · Roma, IT
• Anthony Tomlinson · South San Francisco, US
• Christer Bergst{umlaut over (r)}öm · Espoo, FI

Key dates

• Filing date: Jan 29, 2001
• Grant date: Apr 18, 2006
• Expiry date: Jun 20, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2521/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A side-chain of a substituted aromatic compound is alkylated by reacting the aromatic compound with an alkylating agent in the presence of a catalyst. The catalyst comprises a restructured smectite clay to which basic ions are incorporated by ion-exchange. The restructuring of the smectite clay is carried out by acid-treating the clay prior to ion-exchange.