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- Which of the following undergoes a substitution reaction with sodium cyanide in DMSO at the fastest rate? a) CH3CH2F b) CH3CH2Cl c) CH3CH2Br d) CH3CH2IThe ether molecule below can be prepared in two different ways. Which method is a better way to prepare thedesired product and why?Answer No. 38 and No. 40.
- Explain why quinuclidine is a much more reactive nucleophile thantriethylamine, even though both compounds have N atoms surroundedby three R groups.Which of the following conditions manifest the Markovnikov rule? When the electrophile attaches to the least substitued C while the (A nucleophile attaches to the most substituted C. When the nucleophile attaches to the least substitued C while the B electrophile attaches to the most substituted C. c) None of the choicesFor each pair of compounds determine which will undergo electrophilic substitution faster. (a) (b) (c) (d) CF3 HO Он NO2 () (g) SCH, (e) SO,H OH (h) CI CI HO
- 2. Please complete the following reaction and draw a step wise mechanism. A1C13149) Why is a tertiary alcohol more reactive with hydrogen halides, than secondary alcohols? Because secondary alcohols are smaller and therefore less reactive for the attack of halide nucleophile. Because tertiary alcohols have more hydrogen atoms available for substitution reactions. Because a tertiary alcohol can form a more stable carbocation as an intermediate in the reaction. Only the 1st and the 2nd statements are acceptable.Which of the following compounds is most likely to undergo Michael addition?