Process for preparing 1,6-hexanediol

US8865940B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Alan Martin Allgeier · Wilmington, US
• Wathudura Indika Namal De Silva · Rahway, US
• Ekaterini Korovessi · Wilmington, US
• Carl Andrew Menning · Newark, US
• Joachim C. Ritter · Wilmington, US
• Sourav Kumar Sengupta · Wilmington, US
• Christina S. Stauffer · Wilmington, US

Key dates

• Filing date: Apr 25, 2013
• Grant date: Oct 21, 2014
• Expiry date: Apr 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D309/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are processes for preparing 1,6-hexanediol and synthetic intermediates useful in the production of 1,6-hexanediol from renewable biosources. In one embodiment, a process comprises contacting levoglucosenone with hydrogen in the presence of a first hydrogenation catalyst at a first temperature to form product mixture (I); and heating product mixture (I) in the presence of hydrogen and a second hydrogenation catalyst at a second temperature to form product mixture (II) which comprises 1,6-hexanediol. In one embodiment, the 1,6-hexanediol is converted to 1,6-diaminohexane.