Important Reactions - Important Reactions Alkanes –...

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Unformatted text preview: Important Reactions Alkanes – combustion (x2) Complete: Incomplete: alkane + O2 → CO2 + H2O alkane + O2 → CO2 + CO + C + H2O Br Br | | Alkenes – addition reactions (x5) Halogenation: C=C + Br2 → - C – C | | Pt H | | H | | Hydrogenation: C=C + H2 → -C–C– J.P. Harris PCC Alkene Reactions (continued) Markovnikov’s Rule: Add H to the C with more Hs already! H | X | | Adding H-X: C=C + H-X → - C – C – | H2SO4 H | | OH | | Hydration: C=C + H2O → - C – C – Heat, pressure, Polymerization: nCH2=CH2 catalysts → (CH2 – CH2)n Alkynes – same reactions as alkenes, but need 2x as much added reactant to make alkanes from alkynes J.P. Harris PCC Aromatic Compounds – no reactions Alcohols – dehydration (x2), oxidation (x3) | | H2SO4 Dehydration to alkene: -C–C| | 180oC → C=C + H2O H OH H2SO4 Dehydration to ether: R-O-H + H-O-R → R-O-R + H2O 140oC Oxidation: Primary Alcohol: OH | O (O) → R - C - H + H2O + (O) O R - C - OH R-C-H + | H J.P. Harris PCC OH | O (O) → R - C - R’ + H2O Secondary Alcohol: R - C - R’ + | H Tertiary Alcohol: no reaction Thiols Oxidation: Reduction: 2R - SH + (O) → R - S - S - R + 2(H) → H2O R-S-S-R + 2R – SH Metallization: 2R – SH + M2+ → R - S - M - S - R + 2H+ J.P. Harris PCC ...
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This note was uploaded on 12/05/2010 for the course CHM 238 taught by Professor Arney during the Spring '07 term at Sam Houston State University.

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Important Reactions - Important Reactions Alkanes –...

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