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. Predict the products that would be formed from such a reaction A. 1-pentene (80%) and 2-pentene (20%) B. 1-pentene (20%) and 2-pentene (80 %) C. 1-pentene (50 %) and 2-pentene (50 %) D. 1-pentene (0 %) and 2-pentene (100 %) E. 1-pentene (100 %) and 2-pentene (0 %) 2. What reaction pathway is followed by the reaction above? A. E2 dehydrohalogenation B. E1 dehydrohalogenation C. SN1 dehydrohalogenation D. SN2 dehydrohalogenation E. A mixture of E1 and E2 pathways 3. What is responsible for the formation of different products (major and minor). A. The different activated complex involved in the mechanism. B. Bimolecular Nucleophilic substitution reaction C. Bimolecular Elimination reaction D. The presence of sodium ethoxide E. The hybridisation nature of the secondary carbocation
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. Predict the products that would be formed from such a reaction
A. 1-pentene (80%) and 2-pentene (20%)
B. 1-pentene (20%) and 2-pentene (80 %)
C. 1-pentene (50 %) and 2-pentene (50 %)
D. 1-pentene (0 %) and 2-pentene (100 %)
E. 1-pentene (100 %) and 2-pentene (0 %)
2. What reaction pathway is followed by the reaction above?
A. E2 dehydrohalogenation
B. E1 dehydrohalogenation
C. SN1 dehydrohalogenation
D. SN2 dehydrohalogenation
E. A mixture of E1 and E2 pathways
3. What is responsible for the formation of different products (major and minor).
A. The different activated complex involved in the mechanism.
B. Bimolecular Nucleophilic substitution reaction
C. Bimolecular Elimination reaction
D. The presence of sodium ethoxide
E. The hybridisation nature of the secondary carbocation
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