Preparation of aminoalkylsilanes

US4045460A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventor

• Roland Kleinstuck · Bensberg, DE

Key dates

• Filing date: Apr 28, 1976
• Grant date: Aug 30, 1977
• Expiry date: Apr 28, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In the preparation of an aminoalkylsilane of the formula EQU (RO).sub.3.sub.3-n R.sub.n.sup.1 SiR.sup.2 NH.sub.2 3- wherein PA1 n is an integer from 0 to 3, PA1 R is an alkyl or alkoxyalkyl radical with 1 to 8 C atoms in each alkyl radical, or an aryl radical with up to 10 C atoms, PA1 R.sup.1 is an alkyl radical with up to 8 C atoms or an aryl radical with up to 10 C atoms, and PA1 R.sup.2 is a divalent hydrocarbon radical with 2 to 10 C atoms, By reacting the corresponding halogenoalkylsilane with excess ammonia at a temperature above about 80.degree. C, and working up the reaction mixture, the improvement which comprises adding a metal alcoholate to the reaction mixture obtained from the amination before the mixture is worked up. The alcoholate may be added in an amount equivalent to the halogenoalkylsilane initially employed or to the halide content of the filtrate after amination but before working up, as by distillation.