Cobalt-catalyzed synthesis of ε-caprolactam and nylon-6 from aminopentene and carbon monoxide

Shengsheng Liu, Ayusman Sen, Rudy Parton

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4 Scopus citations

Abstract

ε-Caprolactam and nylon-6 oligomers were synthesized from 4-pentene-1-amine and/or 3-pentene-1-amine and carbon monoxide using Co 2(CO)8 as catalyst. The results show that the volatile fraction of the product mixture is composed of ε-caprolactam, 3-methyl-2-piperidinone and 3-ethyl-2-pyrrolidinone, while the solid residue mainly consists of nylon-6 oligomers. The addition of excess PEt3 as ligand can significantly improve the regioselectivity to ε-caprolactam. Using 3-pentene-1-amine as starting material leads to the same results as 4-pentene-1-amine due to rapid C=C bond isomerization.

Original languageEnglish (US)
Pages (from-to)69-77
Number of pages9
JournalJournal of Molecular Catalysis A: Chemical
Volume210
Issue number1-2
DOIs
StatePublished - Mar 1 2004

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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