aldehydes_and_ketones

aldehydes_and_ketones - Aldehydes and Ketones E.V Blackburn...

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© E.V. Blackburn, 2008 Aldehydes and Ketones
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© E.V. Blackburn, 2008 Structure R H O aldehyde R R O ketone O carbonyl group
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© E.V. Blackburn, 2008 Structure C O R 'R sp 2 120 o σ σ π δ- δ+
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© E.V. Blackburn, 2008 Nomenclature of aldehydes Aldehydes are named by adding the suffix - al to the name of the corresponding hydrocarbon. The carbonyl carbon is given the number 1 . H H O methanal or formaldehyde H 3 C H O ethanal acetaldehyde
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© E.V. Blackburn, 2008 Nomenclature of aldehydes OH O H HOH 2 C H OH H O
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© E.V. Blackburn, 2008 H O benzaldehyde CH 3 CH 2 CHCH 2 CHO CH 3 3-methylpentanal benzenecarbaldehyde When -CHO is attached to a ring, the suffix carbaldehyde is used. Nomenclature of aldehydes
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© E.V. Blackburn, 2008 Nomenclature of aldehydes O CHO H
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© E.V. Blackburn, 2008 Nomenclature of ketones One can also name the two radicals, R and R’, followed by the word ketone . Ketones are named using the name of the corresponding hydrocarbon followed by the suffix - one . The position of the carbonyl carbon must be indicated. H 3 C H 3 C O propanone acetone dimethyl ketone
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© E.V. Blackburn, 2008 H 3 CH 2 C H 3 C O butanone ethyl methyl ketone H 3 C H 2 C O 1-phenyl-2-propanone benzyl methyl ketone Nomenclature of ketones
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© E.V. Blackburn, 2008 diphenylmethanone benzophenone Nomenclature of ketones phenylethanone acetophenone O O CH 3
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© E.V. Blackburn, 2008 Nomenclature of ketones OH O
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© E.V. Blackburn, 2008 Synthesis of aldehydes - oxidation of primary alcohols PCC = pyridinium chlorochromate RCH 2 OH K 2 Cr 2 O 7 R H O RCH 2 OH PCC in CH 2 Cl 2 R H O
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© E.V. Blackburn, 2008 RCHO or ArCHO A special catalyst is used: palladium on barium sulfate which has been deactivated (poisoned) with an amine such as quinoline.
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This note was uploaded on 04/27/2011 for the course CHEM 261 taught by Professor Drclive during the Spring '09 term at University of Alberta.

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aldehydes_and_ketones - Aldehydes and Ketones E.V Blackburn...

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