Volume 58, Issue 11 pp. 3486-3490
Communication

Nylon Intermediates from Bio-Based Levulinic Acid

Annemarie Marckwordt

Annemarie Marckwordt

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Fatima El Ouahabi

Fatima El Ouahabi

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Dr. Hadis Amani

Dr. Hadis Amani

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Dr. Sergey Tin

Dr. Sergey Tin

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Dr. Narayana V. Kalevaru

Corresponding Author

Dr. Narayana V. Kalevaru

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Prof. Dr. Paul C. J. Kamer

Prof. Dr. Paul C. J. Kamer

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Dr. Sebastian Wohlrab

Dr. Sebastian Wohlrab

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
Prof. Dr. Johannes G. de Vries

Corresponding Author

Prof. Dr. Johannes G. de Vries

Leibniz Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany

Search for more papers by this author
First published: 16 January 2019
Citations: 31

Graphical Abstract

Green nylon: Use of 25 % ZrO2/SiO2 as catalyst allows the gas-phase ring-opening of bio-based γ-valerolactone with methanol to a mixture of methyl pentenoates containing 81 % of the 4-isomer, which could be selectively hydroformylated from the mixture to methyl 5-formyl-valerate, an intermediate for ϵ-caprolactam. The remaining isomers were converted into dimethyl adipate.

Abstract

Use of ZrO2/SiO2 as a solid acid catalyst in the ring-opening of biobased γ-valerolactone with methanol in the gas phase leads to mixtures of methyl 2-, 3-, and 4-pentenoate (MP) in over 95 % selectivity, containing a surprising 81 % of M4P. This process allows the application of a selective hydroformylation to this mixture to convert M4P into methyl 5-formyl-valerate (M5FV) with 90 % selectivity. The other isomers remain unreacted. Reductive amination of M5FV and ring-closure to ϵ-caprolactam in excellent yield had been reported before. The remaining mixture of 2- and 3-MP was subjected to an isomerising methoxycarbonylation to dimethyl adipate in 91 % yield.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.