EXAM22008KEY

EXAM22008KEY - CHEMISTRY 2261 EXAM 2 October 8, 2008 LIST...

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CHEMISTRY 2261 October 8, 2008 EXAM 2 NAME (PRINT)____________________________________________ 1 2 3 4 5 6 7 8 TOTAL A N S W E R K E Y LIST number 1. (15 pts) Indicate (circle) high priority groups and assign ( Z ) or ( E ) configuration to the following compounds. You will not get credit for your ( Z ) or ( E ) choice unless you assign correct priorities. HS O exampl e( a )( b) Cl F ( E ) F NH 2 Cl ( Z E ) +1 +1 +1 "bonus" +1 "bonus" +1 +1 CO 2 H NC H 2 N F F N H O (c) (d) (e) O H Br Cl ( E E E ) +1 "bonus" +1 "bonus" +1 "bonus" +1 +1 +1 +1 +1 +1 N C CN = is what most students missed 2. (8 pts) Draw structures corresponding to the following IUPAC names. 3-isobutyl-5,6-dimethyl- 3 -cyclohexenol 4- sec -butyl-3-ethyl- 2 -cyclobutenol OH HO OH OH correct correct incorrect incorrect 1 4 2 3 5 6 1 2 43 1 2 1 2 3 5 6 4 position of alkene (not OH) position of alkene (not OH) These were similar to the nomenclature questions on Quiz 2, and the same error cropped up regarding how to interpret the last number in the IUPAC name. See the Quiz 2 answer keys for further discussion of how to answer this type of question.
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This note was uploaded on 06/09/2011 for the course CHEM 2261 taught by Professor Crowe during the Spring '08 term at LSU.

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EXAM22008KEY - CHEMISTRY 2261 EXAM 2 October 8, 2008 LIST...

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