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Paper IV (Theory) Organic Chemistry Code  09010410

S.No Topics Domain Time (hrs)
1 Infrared (IR) absorption spectroscopy

  • Molecular vibrations, Hooke’s law, selection rules,
  • Intensity and position  of  IR  bands,  measurement  of  IR  spectrum,
  • Fingerprint region, characteristic absorptions of various functional groups and interpretation   of   IR   spectra   of   simple   organic   compounds.
  • Applications of IR spectroscopy in structure elucidation of simple organic compounds.
 

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2 Amines and Diazonium Salts

  • Structure and nomenclature of amines, physical properties.
  • Separation of a mixture of primary, secondary and tertiary amines. Structural features affecting basicity of amines.
  • Preparation of alkyl and aryl amines (reduction  of nitro compounds, nitriles, reductive amination of aldehydic and ketonic compounds.
  • Gabriel-phthalimide reaction, Hofmann bromamide reaction. , electrophilic aromatic substitution in aryl amines, reactions of amines with nitrous acid.
  • Mechanism   of   diazotisation,   structure   of   benzene   diazonium chloride, Replacement of diazo group by H, OH, F, Cl, Br, I, NO2 and CN groups,reduction  of diazoniumsaltstohyrazines,couplingreaction and its synthetic application.

Nitro Compounds:

  • Preparation of nitro alkanes and  nitro arenes and their chemical reactions
  • Mechanism of electrophilic  substitution reactions  in nitro arenes and their reductions in acidic, neutral and alkaline medium.

 

 

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3 Aldehydes and Ketones

  • Nomenclature and structure of the carbonyl group.
  • Synthesis of aldehydes and ketones with particular reference to the synthesis of aldehydes from acid chlorides,
  • Advantage of oxidation of alcohols with chromium trioxide (Sarett reagent) pyridinium chlorochromate (PCC) and pyridinium dichromate. Physical properties.
  • Comparison of reactivities of aldehydes and ketones.
  • Mechanism of nucleophilic additions to carbonyl group with particular emphasis on benzo in,aldol, Perkin and Knoevenagel condensations.
  • Condensation with ammonia and its derivatives.
  • Wittig reaction. Mannich reaction. Oxidation of aldehydes, Baeyer–Villiger oxidation of ketones, Cannizzaro   reaction.   MPV, Clemmensen,   Wolff-Kishner,   LiAlH4   and NaBH4 reductions.

Alkanes and Cycloalkanes

  • IUPAC  nomenclature  of  branched  and  unbranched  alkanes,  thealkyl group, classification  of carbon atoms in alkanes.
  • Isomerism in alkanes, sources,
  • Methods of formation (with special reference to Wurtz  reaction,  Kolbe  reaction,  Corey-House  reaction  and decarboxylation of carboxylic acids), physical properties.
  • Cycloalkanes-nomenclature,synthesis of cycloalkanes and their derivatives– photochemical(2+2) cyclo addition reactions, dehalogenation of D,Z- dihalides, pyrolysis of calcium or barium salts of dicarboxylic acids, Baeyer’s strain theory and its limitations. theory of strainless rings
 

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Recommended Texts:

  1. Morrison, R. T. & Boyd, R. N. Organic Chemistry, Dorling Kindersley (India) Pvt. Ltd. (Pearson Education).
  2. Finar, I. L. Organic Chemistry (Volume 1), Dorling Kindersley (India) Pvt. Ltd. (Pearson Education).
  3. Finar, I. L. Organic Chemistry (Volume 2: Stereochemistry and the Chemistry of Natural Products), Dorling Kindersley (India) Pvt. Ltd. (Pearson Education).
  4. Silverstein, R.M., G.C. Bassler and T.C. Morrill. Spectroscopic Identification of Organic Compounds.
  5. Abraham, R.J., J. Fisher and P. Loftus. Introduction to NMR Spectroscopy.
  6. Dyer, J.R. Application of Spectroscopy of Organic Compounds.
  7. Williams, D.H. and Fleming Spectroscopic Methods in Organic Chemistry.
  8. Jag Mohan. Organic Spectroscopy.


 

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