In organic chemistry, olefin metathesis is an organic reaction that entails the redistribution of fragments of alkenes (olefins) by the scission and regeneration of carbon-carbon double bonds. [1] [2] Because of the relative simplicity of olefin metathesis, it often creates fewer undesired by-products and hazardous wastes than alternative ...

Olefin Metathesis allows the exchange of substituents between different olefins - a transalkylidenation. This reaction was first used in petroleum reformation for the synthesis of higher olefins (Shell higher olefin process - SHOP), with nickel catalysts under high pressure and high temperatures.

Jun 30, 2023 · Olefin Metathesis [1] involves two olefin substrates which form a four-membered ring intermediate (first proposed by Chauvin) and then rearrange the substituents to form two new carbon-carbon double bonds. Late transition metal alkylidene compounds (eg.

The development of well-defined metathesis catalysts that are tolerant of many functional groups yet reactive toward a diverse array of olefinic substrates has led to the rapid acceptance of the RCM reaction as a powerful method for forming carbon-carbon double bonds and for

Olefin metathesis is a reaction which allows to cut and rearrange C=C double bonds in olefins to make new olefins (Fig. \(\PageIndex{1}\)). Formally, the carbon-carbon bond of the reactant is cleaved homoleptically and the two carbene fragments are combined in a different way.

This chapter will focus on learning and applying olefin metathesis reactions for the synthesis of rings. We will meet the most common reaction catalysts, learn the reaction mechanism, and see several examples. We will also see brief examples of alkyne metathesis and cross metathesis.

Olefin Metathesis Description: Treatment of alkenes with Grubbs’ catalyst (pictured; “Ru” is ruthenium) results in a “swapping” of the terminal carbons of alkenes, a reaction known as olefin metathesis.

Olefin Metathesis: Conversion of smaller to larger alkenes; Begins with a Transition Metal Carbene (alkylidene).

By determining the key reaction intermediates in olefin metathesis, these combined mechanistic studies now enabled the use of rational design for fur- ther catalyst optimization.

Olefin metathesis is a chemical reaction in which carbon-carbon double bonds (olefins) break and reform in new configurations, resulting in the exchange of alkylidene groups between the reacting molecules.