Intermediates for 2'-substituted-spiro[benzofuran-2(3H),1'-cycloalkanes]

US4594435A · kind A · utility

Assignee

• Hoechst Roussel Pharmaceuticals · US

Inventors

• Edward J. Glamkowski · Hackettstown, US
• Michael C. Jones · North Webster, US

Key dates

• Filing date: Feb 28, 1985
• Grant date: Jun 10, 1986
• Expiry date: Feb 28, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

2'-substituted-spiro[benzofuran-2(3H),1'-cycloalkanes] and methods of preparing same are described. On the aromatic portion of the benzofuran ring, there may be a substituent or substituents including halogen, amino, lower-alkyl-substituted amino, lower alkyl, lower alkoxy, hydroxy and nitro. The substituents at the 2-position of the cycloalkane ring are --(CH.sub.2).sub.n NR.sup.1 R.sup.2 where n is 0, 1 or 2 and R.sup.1 and R.sup.2 are each independently hydrogen and alkyl or 1-3 carbons. These compounds are useful as antidepressants and analgesics. Various other compounds which are useful as intermediates for preparing the aforementioned compounds and methods for preparing same are also described.