pjc-o2e1-ans - Organic Chemistry II CMH 2211 Sample Exam 1...

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Organic Chemistry II CMH 2211 Sample Exam 1 Answer Key I. Write structures for the compounds shown below: ____________________ __________________ __________________ meta -bromophenol o -aminobenzoic acid phenanthrene ____________________ __________________ __________________ 3-methyl-2-phenylhexane benzyl alcohol para -xylene II. Name the compounds whose structures are shown below: 2-bromotoluene 1,2-dibromocyclohexane cyclopentylbenzene ____________________ __________________ __________________ 4-methylbenzaldehyde anthracene (R)-1-bromo-1-phenylethane ____________________ __________________ __________________ III. Fill in the Blank 1. In order for a compound to be aromatic it must satisfy certain rules. The compound or ion must be cyclic and planar, have all atoms in the ring with sp 2 hybridization, and have a Huckle number of electrons in unhybridized p orbitals. 2. Another name for 1,3 dibromobenzene is meta -dibromobenzene. 3. Benzene is more stable than you might expect based upon a 6 membered ring and three double bonds. This is because benzene has resonance stabilization. 4. Is 26 a Huckle number? (Y/N) Yes (4*6+2) 5. Benzene ring deactivators have something in common. They all have the atom attached to the ring has a full or partial positive charge.
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