Examples of olefin in the following topics:
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- The mechanism shown at the top of the second illustration demonstrates the general form of olefin metathesis, but does not treat subtle factors such as regioselectivity and catalytic turnover.
- A carbene olefination may serve to terminate metathesis, as in reaction # 4, but is not catalytic.
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- Olefination of carbonyl functions may be effected by Tebbe's reagent, which is the source of a Ti(IV) methylene complex.
- Unlike the Simmons-Smith reagent, it olefinates ester and amide carbonyl functions, as well as aldehydes and ketones.
- The most important reaction of these alkylidene complexes is undoubtedly olefin metathesis, a redistribution of the carbon groups joined by double (or triple) bonds.
- Industrially important olefin metathesis operations are conventionally carried out with heterogeneous catalysts such as MoO3 on alumina.
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- Finally, with three contiguous stereogenic centers established, the resulting acyclic triene undergoes cyclization by an olefin metathesis reaction.
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- They can be produced in the laboratory for small scale reactions via the oxidation of primary alcohols or aldehydes, oxidative cleavage of olefins, and through the hydrolysis of nitriles, esters, or amides.
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- For example, ethyl chloride, neopentyl chloride (2,2-dimethylpropyl chloride) and 2,2,2-triphenylethyl chloride are all 1º-alkyl chlorides, which hydrolyze in wet formic acid to mixtures of alcohols and olefins (SN1 & E1 mechanisms).
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- Hydrogen can be added across a double bond—such as the olefin in maleic acid shown—by utilizing a catalyst, such as palladium.
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- The photoaddition of carbonyl compounds to olefins had been observed by the Italian chemist E.