The Formation of Diels-Alder Reactions

The Diels-Alder reactions consist of a reversible dienophile and diene all in a one-step reaction initiated simply by head. These types of reactions kind a half a dozen membered diamond ring with by least one pi connect and two sigma bonds, making the reaction exothermic. The goal of the first part of these experiments should be to make items that have a greater aromatic stablizing. In 1928, Otto Paul Hermann Diels and Kurt Alder initially documented this kind of reaction, and so the name Diels-Alder reactions. Their effect is one of the even more useful reactions done in chemistry because it would not require very much energy in order to make the cyclohexene ring plus the result can easily create four stereo centers, making it compatible for a various functional groups which still has double bonds in the items. Dimethyl Tetraphenylphthalate. Tetraphenylcyclopentadienone (0. 100g), dimethyl acetylene-dicarboxylate (0. 1mL), and nitrobenzene (1mL) was include in a reaction tube with a cooking stick. The reaction was heated up until the crimson solution transforms tan and refluxed. Ethanol(3mL) was stirred in after the solution was warm, and placed in ice cubes. The sound was vacuum filtered, laundered with ethanol, dried and weighed. Hexaphenylbenzene. Tetraphenylcyclopentadienone (0. 100g) and diphenylacetylene (500mg) was put into a reaction tube and freely capped. The solid was heated to reflux having a sad bath until the stable turned a brown color. The tube was shaken gently to get about white solids at the bottom of the reaction tube. Diphenyl ether(2mL) was added and heated before the solid dissolved. The reaction conduit was cooled again and had toluene(2mL) added then placed in ice. The merchandise was cleaner filtered, laundered with toluene, dried, and weighed. Tetraphenylnaphthalene. Tetraphenylcyclopentadienone(0. 500g), glyme(3mL), and a cooking chip was added to a reaction tube. Isoamyl nitrite(0. 35mL) was added via syringe to effect tube and heated to reflux for 2-5 a few minutes....

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