Manufacture of 1-methyl-3-(monohalogeno)-phenylindans and dihalogeno-1-methyl-3-phenylindans

US3998894A · kind A · utility

Assignee

• BASF SE

Inventors

• Heinz Eilingsfeld · Bischofswerda, DE
• Karl Baur · Baierbrunn, DE
• Manfred Patsch · Monsheim, DE
• Rolf Platz
• Hans-Georg Schecker
• Martin Fischer · Ludwigshafen, DE

Key dates

• Filing date: Nov 15, 1973
• Grant date: Dec 21, 1976
• Expiry date: Nov 15, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/281
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Manufacture of 1-alkyl-3-(monohalogeno)-phenylindans and dihalogeno-1-methyl-3-phenylindans by reaction of halogenostyrene and styrene in the presence of phosphoric acid of a certain concentration, or by reaction of halogenostyrenes in the presence of phosphoric acid of a certain concentration and of organic compounds irradiated with light of 2,000 to 8,000 A and capable of absorbing the said light, and the new dihalogeno-1-methyl-3-phenylindans and 1-methyl-3-(monohalogeno)-phenylindans. The products are starting materials for the manufacture of dyes and pesticides.