Q9 Group Metropolitan State University of Denver CHE 3100 Organic Chemistry Use

Question

Q9 Group Metropolitan State University of Denver CHE 3100 Organic Chemistry Use a scantron for these multiple choice questions. Work in groups and you can use any resources Keep the exam, hand in the scantrons by 3PM Bubble in 900# and write password in box for name. These scontrons will be returned on November 28. 1. Whichreagents could be used to prepare -s SK" In the following reaction, what is the first thing that happens mechanistically? C) The alcohol becomes protonated. b. The iodide ion attacks the carbon that has the OH group. c. The OH group leaves. d. A carbocation is formed. action? 3. What is the major product formed in the fo 2CH CHCH CHJCH2 P. H,C CH CH2 H CH3 H3C CH 4. Which statement is not true when considering the following reaction? acetone CH3 (only product) Mesylates serve as good leaving groups b. The nucleophile attacks the carbon attached to the sulfonate group and the sulfonate group leaves. c. This is an Ss1 reaction. The sulfonate group is a good leaving group because it is a weak base

Explanation / Answer

1. Answer is option d.

Thiolate react with bromobutane via SN2 mechanism to form the expected product.

2. Answer is option a.

Alcohol is protonated to convert poor leaving hydroxy group to to good leaving water group.

3. Answer is option a.

Zaitsev product prefered, double bond is formed between more substituted carbon.

4. Answer is option c.

Reason: inversion of configuration taken place in the product this is possible in SN2 mechanism therefore SN1 is not possible.

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