CH223 001 HW 15

CH223 001 HW 15 - CH223 001 HW 15

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CH223 001 HW 15 (Daily) SHAW ROBERT H CH 223, section 001, Fall 2008 Instructor: Kay Sandberg Web Assign Current Score: 9.5 out of 11 Due: Friday, September 26, 2008 07:00 AM EDT Description This assignment corresponds mainly to Lecture 15 and the DE presentation(s) which accompany it. Instructions The due date for this assignment is past. Your work can be viewed below, but no changes can be made. 1. 3.5/3.5 points This question deals with epoxide ring opening. Please consult the DE lecture presentation 10B (slides 2 & 3) (click here) to see how to determine the configurations of epoxide chiral carbons. (a) Select the correct stereo-prefixes for the starting material. (2S,3S) (2S,3S) (b) Draw the skeletal structure of the major organic product A. CH223 001 HW 15 http://www.webassign.net/v4cgirhshaw@ncsu/student.pl?q=2008120717. .. 1 of 6 12/7/2008 12:31 PM
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CC[C@](C)(O)[C@@H](C)O (c) Draw the skeletal structure of the major organic product B. CC[C@@](C)(O)[C@H](C)O The carbons of both products retain the same numbering as the carbons of the starting material. (d) Select the correct stereo-prefixes for major organic product A. (2R,3S) (e) Select the correct stereo-prefixes for major organic product B. (2S,3R) (2S,3R) Solution or Explanation
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CH223 001 HW 15 - CH223 001 HW 15

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