Method for producing C4-C15 lactams

US10618873B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Richard Dehn · Ludwigshafen, DE
• Ahmad Dehestani · Walnut Creek, US
• Klemens Massonne · Bad Dürkheim, DE
• Steffen WAGLÖHNER · Schallstadt, DE
• Joaquim Henrique Teles · Waldsee, DE
• Thomas Schaub · Ludwigshafen, DE
• Till Christian Brüggemann · Ludwigshafen, DE
• Carlos Tellaeche Herranz · Heidelberg, DE
• Oliver Trapp · Dossenheim, DE
• Jedrzej Wysocki · Heidelberg, DE

Key dates

• Filing date: Jan 30, 2017
• Grant date: Apr 14, 2020
• Expiry date: Jan 30, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J29/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing C4-C15 lactams, in which a C1-C10-alkyl nitrite is reacted with a C4-C15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C4-C15-cyclohexanone oxime which is then converted further to a C4-C15 lactam; the C1-C10 alcohol formed is recycled into the preparation of the C1-C10-alkyl nitrite.