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Unformatted text preview: Heres generally a good rule: Ask yourself these questions: 1. Is the nucleophile a strong base? 2. Is the nucleophile sterically hindered? 3. Is the substrate sterically hindered? (tertiary, secondary, primary branched) *if you have at least 2 yess to the questions, elimination. If not, substitution. 5. Draw a reasonable mechanism for the reaction below. Br > OCH 2 CH 3 +HBr CH 3 CH 2 OH 6. Draw all of the isomers, including stereoisomers of C 5 H 8 Cl 2 which contain a cyclopentane ring. Label any compounds whih are meso stereoisomers and label pairs of enantiomers. 7. Draw reasonable mechanism for the transformation below. Be sure to account for stereochemical outcome of the reaction. OH OSO 2 CH 3 H Base Polar aprotic solvent > O CH 3 H...
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This note was uploaded on 01/25/2010 for the course CHEM chem 140A taught by Professor Dr.yang during the Spring '07 term at UCSD.
- Spring '07