Chemistry Exam 3 - McGrath, November 1998: Organic Reactions and Mechanisms, Exams of Chemistry

Download Chemistry Exam 3 - McGrath, November 1998: Organic Reactions and Mechanisms and more Exams Chemistry in PDF only on Docsity! CHEMISTRY 246A EXAM 3 McGrath November 6, 1998 Name:___________ Key ____________ ID#:____________________________ Most of these problems are from previous exams or the book! XC_____ (2) Total______ (102) GOOD LUCK! 1._____ (24) 2._____ (32) 3._____ (24) 4._____ (20) Extra Credit—Thanksgiving Edition (2 pts): To the nearest order of magnitude, how many turkeys are sacrificed every Thanksgiving in the United States (you must express your answer as a power of 10!) ___________________________ YOU SHOULD HAVE 6 PAGES!!! 1. Draw the principle organic product expected from each of the following reactions. Indicate stereochemistry precisely where appropriate! (24 pts) (a) (b) (c) (d) (e) (f) OH D H TsCl pyridine NaCN DMSO NaOCH3 CH3OH Br OH 1. PBr3 2. NaI acetone CH3CH2S –Na+ DMF Br CH3CH2Br CH2S –Na+ CH3 Br CH2SCH2CH3 CH3 NaOEt major minor CN D H I SCH2CH3