From your knowledge of 1,3-butadiene use energy diagrams, supporting drawings, and a written explanation answer the following: HBr -80 °C 80 °C 85% 15% 15% 85% a. Write a valid mechanism for the formation of the two products labeling the 1,2 and the 1,4 product. b. Draw the energy diagram for the above reaction showing the path to the two products. Label the activation energies, intermediate, 1,2 product, 1,4 product, and write a brief explanation why one is favored over the other at the two temperatures.
Reactions of Ethers
Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.
Epoxides
Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.
Williamson Ether Synthesis
An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.
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