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Past Exam for CHEM 241 - Organic Chemistry II at Maryland (UMD)

Exam Information

Material Type:Exam 3
Professor:Staff
Class:CHEM 241 - Organic Chemistry II
Subject:Chemistry
University:University of Maryland
Term:Fall 1991
Keywords:
  • Either...or
  • Provided That
  • Differences
  • Macromolecules
  • Continued...
  • Stereochemistry
  • Continuation
  • Substitution
  • Acetoacetic Ester
  • Following Reactions
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Sample Document Text

CHEM 243 EXAM #3 NAME Nov. 6, 1991 TA This exam has 7 questions on pages numbered I-t.. Please check your copy. Answer all questions in the spalce provided. 1., lIS ----------- 2. lIS ----------- 3. 120 ----------- 4., 135 ----------- 5., lIS ----------- 6., 120 ----------- 7., lIS ----------- Total 1135 CHEM 243 EXAM #3 1. (15) Propose a complete mechanism for the conversion of the cyanohydrin of ben:zaldehyde to mandelic acid. What type of reaction is this? OH -----------------~ 1 CHEM 243 EXAM #3 3. (continued) 4. ___ ~ A. Br2, H30+ B. Br2~ NaOH, H20 C Bf2. HgO D. all of the above 4. (35) Give the major organic product of each of the following reactions. Show all- relevant stereochemistry! Pay careful attention to the reagents used. If no reaction is predicted, write "N.R." sodium acetate .. B. 1. NaCN 1-Bromohexane 2. LiAIH 4 . THF c. o 0::: , . OH ____ C~~~~ ____ ~. HCI " OH 4 ..... .,.,-~ CHEM 243 E...

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