[PDF] Copper-catalyzed radical oxyallylation of olefins for the

How were cyclic olefins prepared?

EXPERIMENTAL Preparation of the Cyclic Olefins 1. Me thyIene cyc1obut ane a. Pentaerythrltyl Bromide Pentaerythritol (104 g., 0.764 mole) was placed in a 500ml. flask provided with a condenser which had at the top a dropping funnel and a gas outlet tube connected to a trap for absorbing the large amount of hydrogen bro­ mide which was evolved.

What are the advantages of cycloaddition reactions of benzyne with olefins?

These cycloaddition reactions display good yields, even in the absence of a transition metal catalyst. These reactions of benzyne with olefins provide efficient methods for the synthesis of benzocyclobutenes, biaryl compounds and 9,10-dihydrophenanthrene derivatives.

What is the formula for cyclic olefin?

For a cyclic olefin containing only one double bond, the general formula is C n H 2n-2. It can be noted that acyclic alkenes that only contain a single double bond and which do not contain any other functional groups in their chemical structures form a homologous series, and are generally referred to as mono-enes.

How does oleuropein prevent free radical formation?

Prevention of free radical formation by oleuropein occurs through its ability to chelate metal ions, such as Cu and Fe, which catalyze free radical generation reactions [94], and through its inhibitory effect on several inflammatory enzymes like lipoxygenases [48].