The hydration and isomerization of alpha-pinene over zeolite beta. A new coupling reaction between alpha-pinene and ketones

J. C. vanderWaal, H. vanBekkum, JM Vital

Research output: Contribution to journalArticlepeer-review

Abstract

The catalytic potential of zeolite H-beta in the hydration and isomerization of cr-pinene was investigated. In the presence of water the main product is the monocyclic alcohol alpha-terpineol (48%) though selectivity towards bicyclic terpenes is higher than observed for sulphuric acid (26% vs. 5.5%). When the isomerization is performed in pure acetone, a new compound forms by a novel C-C coupling reaction between alpha-pinene and acetone. The product is identified as alpha-terpinyl acetone. This coupling seems to be a general reaction between alpha-pinene and ketones and is catalyzed exclusively by zeolite beta.
Original languageEnglish
Pages (from-to)185-192
JournalJournal Of Molecular Catalysis A-Chemical
Volume105
Issue number3
DOIs
Publication statusPublished - 10 Feb 1996

Keywords

  • zeolite beta
  • alpha-pinene
  • isomerization
  • hydration
  • C-C coupling reaction
  • alpha-terpinyl acetone

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