Instructions: Choose from the options A-E and explain briefly by illuillustrat the chemistry behind each answer. Preamble : A reaction flask contains a 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and results in the formation of two olefinic products. 1. All the following is true about the reaction except? A. The reaction follows Zaistev’s rule B. Sodium ethoxide is the nucleophile in this reaction C. The more highly substituted alkene is the most stable product D. Dehydrohalogenation reaction of the alkyl halide is an elimination reaction E. The starting material (reactant) is a secondary alkyl halide
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.
Instructions: Choose from the options A-E and explain briefly by illuillustrat the chemistry behind each answer.
Preamble : A reaction flask contains a 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and results in the formation of two olefinic products.
1. All the following is true about the reaction except?
A. The reaction follows Zaistev’s rule
B. Sodium ethoxide is the nucleophile in this reaction
C. The more highly substituted
D. Dehydrohalogenation reaction of the
E. The starting material (reactant) is a secondary alkyl halide
2. All the following parameters would affect the rate and kinetics of the reaction except
A. Solvent medium
B. Reaction temperature
C. Reaction time
D. Geometry and structure of the alkyl halide
E. pH
3. What would be the major product when 2-iodopentane is involved in a dehydrohalogenation reaction?
A. 2-iodo-1-pentene
B. 2-pentene
C. (E)-2-pentene
D. (Z)-2-pentene
E. Cis-2-pentene
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