POW-318-1-Key - each IR below and circle the IR absorption...

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Last Name: UTEID: First Name: SCORE: KEY Deadline for POW 1: Jan 26 @ 3:00 PM 1) A common reagent for the reduction of ketones to alcohols is Lithium aluminium hydride (LAH). The method is actually two steps: step one is the reaction of the ketone with LAH and the second step is a hydrolysis reaction using dilute acid. If the temperature during the acid step is not carefully controlled, then the alcohol will undergo acid catalyzed dehydration: If you had a mixture of all three compounds, use IR to determine the identity of each. The IRs for the three compounds are shown below. Assign a structure to
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Unformatted text preview: each IR below and circle the IR absorption peak which identifies the functional group. (2 pts each) O OH 1) LiAlH 4 H 3 O +-H 2 O heat 2) H 3 O + 25 o C O OH 2) Using the Table of "Useful Spectroscopic Data," what IR absorptions would you look for in order to assign each of the following structures? (1 pt ea) O OH O H 3 C O O OH "Ordinary" ketone: 1710-1715 cm-1 (s) Carbonyl: 1710 cm-1 (s) Hydroxyl: 2400-3000 cm-1(br) Carbonyl: 1735 cm-1 (s) Ether: 1050-1250 cm-1(s) Hydroxyl :2400-3000 cm-1(br)...
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This note was uploaded on 02/23/2009 for the course CH 310n taught by Professor Iverson during the Spring '08 term at University of Texas at Austin.

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POW-318-1-Key - each IR below and circle the IR absorption...

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