2008_Exam_1 - Organic Chemistry c3046y 1st Hour Exam...

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1st Hour Exam Organic Chemistry c3046y Wednesday, Feb. 13, 2008 Prof. Leighton The exam is 5 pages long ( not including this one). Please make sure you have all of the pages. . . Question 1 (20 pts): Question 2 (20 pts): Question 3 (20 pts): Question 4 (20 pts): Name: ID#__________________________ Write your name on every page. . Question 5 (20 pts): Total (100 pts):____________ Signature:__________________________ Write complete but succinct answers. Good Luck!
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Name: Page 1 1. Provide detailed mechanisms to account for the following transformations. b. (10 pts) a. (10 pts) (For this one please clearly indicate the product of the first step, and BRIEFLY explain why only one ethyl group adds.) R N O O Me 1. EtMgBr, -78 °C 2. H 3 O + R Et O 1. SOCl 2 Me R O OH 2. MeOH, Et 3 N R O OMe
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Name: 2. Predict the major product of the following reactions: a. (10 pts) b. (10 pts) O Me Me 1. R O O O H 2. i. DIBAl-H, -78 °C ii. H 3 O + OH Me PPh 3 I K + O- t -Bu 2. 1. CrO
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This note was uploaded on 04/16/2008 for the course CHEM C3046 taught by Professor Leighton during the Spring '08 term at Columbia.

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2008_Exam_1 - Organic Chemistry c3046y 1st Hour Exam...

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