CH223 Exam 2 practice 18

CH223 Exam 2 practice 18 - CH223 Exam 2 practice 18

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CH223 Exam 2 practice 18 (Exam practice) SHAW ROBERT H CH 223, section 001, Fall 2008 Instructor: Kay Sandberg Web Assign Current Score: 0 out of 13.5 Due: Monday, November 10, 2008 07:00 AM EST Description This assignment is for practice only. The grade will NOT be used in any calculation therefore you do not have to do this assignment if you do not want to do it. The key and solution will be delivered after your first submission. Instructions Carey Online help for chapter 21 The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Request Extension 1. --/1.5 points Draw the skeletal structure of the indicated species below. Do not include the spectator ion in the structure. major organic product A CCCC(=N)CC major organic product B CH223 Exam 2 practice 18 http://www.webassign.net/v4cgirhshaw@ncsu/student.pl?w=200812071. .. 1 of 9 12/7/2008 1:51 PM
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CCCC(=O)CC Solution or Explanation The Grignard reagent attacks the carbon "throwing up" pi electrons into a lone pair to make a negative N. The water protonates the N to make the imine which is then converted to the ketone by the aqueous acid. 2. --/1.5 points Draw the skeletal structure of the indicated species below. Do not include the spectator ion in the structure. product containing deuterium atom(s) [D]N([D])[D] other product CCCC(=O)[O-] Solution or Explanation Each time the carbon is attacked by the hydroxide, the oxygen is deprotonated by another hydroxide ion and then subsequently the nitrogen is protonated by the water. The nitrogen will be bonded to 3 deuterium atoms when it "leaves" the carbonyl carbon as ammonia. The resulting carboxylic acid will be deprotonated quickly by the hydroxide ion. 3. --/0.75 points
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CH223 Exam 2 practice 18 - CH223 Exam 2 practice 18

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