OCHEM2 Exam4A KEY

OCHEM2 Exam4A KEY - Page 1 4. The Thorpe reaction of...

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Name: __________________________ Date: _____________ 1. The linkages that join amino acids together to form proteins are primarily ___________ bonds. 2. What would be the major product of the following reaction? A) CH 3 CH 2 COCH 2 CH 2 CO 2 C 2 H 5 B) CH 3 CH 2 CO 2 CH 2 CH 2 CO 2 C 2 H 5 C) D) E) 3. Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), ethyl bromide, potassium tert -butoxide, isobutyl chloride, hot aqueous NaOH, HCl, and heat. What is the final product? A) 4-Ethyl-2-methylpentanoic acid B) 6-Methylheptanoic acid C) 2-Ethyl-3-methylpentanoic acid D) 2-Ethyl-4-methylpentanoic acid E) Ethylisobutylmalonic acid
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Unformatted text preview: Page 1 4. The Thorpe reaction of dinitriles is analogous to the Dieckmann condensation of diesters. What is the product predicted to result from the use of N CCH 2 CH 2 CH 2 CH 2 C N and sodium ethoxide? A) I B) II C) III D) IV E) V Page 2 5. Consider the synthesis above. What is compound X? A) B) C) D) E) 6. Consider the synthesis above. What is compound Y? A) B) C) CH 3 CH 2 Br D) C 6 H 5 CH 2 Br E) C 6 H 5 Br Page 3 7. Consider the synthesis above. What is compound Z? A) B) C) D) E) Page 4 Answer Key 1. amide 2. C 3. D 4. A 5. A 6. D 7. B Page 5...
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This test prep was uploaded on 04/10/2008 for the course CHEM 123 taught by Professor Franz during the Spring '08 term at Pacific.

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OCHEM2 Exam4A KEY - Page 1 4. The Thorpe reaction of...

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