Polymers from Plant Oils by Alessandro Gandini & Talita M. Lacerda

Author:Alessandro Gandini & Talita M. Lacerda
Language: eng
Format: epub
ISBN: 9781119555827
Publisher: Wiley
Published: 2018-11-12T14:21:00+00:00

Chapter 5

Metathesis Reactions Applied to Plant Oils and Polymers Derived from the Ensuing Products

5.1 General Considerations

Olefin metathesis (‘metathesis’ from the Greek ‘change of position, transposition’) [1] is a key reaction in organic synthesis because it allows preparation of molecules that are crucial to promote advances in medicine, biology and materials science. The importance of this reaction was demonstrated by the award of the 2005 Nobel Prize in chemistry to Yves Chauvin, Robert H. Grubbs, and Richard R. Schrock for elucidation of the reaction mechanisms and discovery of various highly efficient and selective catalysts related to metathesis [2].

Briefly, in their essence, olefin metathesis reactions induce reorganisation of the carbon atoms of two C=C double bonds to generate two new ones (Scheme 5.1). As stated by Hoveyda and Zhugralin in a very informative review published by Nature in 2007 [1], olefin metatheses may be classified as ‘cross-metathesis’ (CM), ‘ring-closing metathesis’ (RCM) or ‘ring-opening metathesis’ (ROM) [1, 3]. Metathesis reactions applied in polymer synthesis (‘ring-opening metathesis polymerisation’ (ROMP)) and acyclic diene metathesis (ADMET) polymerisation will be discussed in more detail later in this chapter.

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