#1
23rd August 2014, 04:36 PM
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Organic Chemistry Preparation Tips
Will you please provide Tips for CBSE Class 12 Organic Chemistry Preparation?
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#2
26th August 2014, 11:55 AM
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Re: Organic Chemistry Preparation Tips
Here I am suggesting few Tips for CBSE Class 12 Organic Chemistry preparation which you are looking for . Organic Chemistry is easiest portion of chemistry in class 12. Alcohols, Phenols and Ethers and Aldehydes, Ketones and Carboxylic Acids are the two most important chapters from Organic chemistry. Solve all problems of NCERT exercise to have command over this portion. Some important topics from Organic chemistry are- Sandmeyer’s reaction Nucleophilic substitution reaction Optical isomerism Electrophilic substitution reaction Esterification Reimer-Tiemann reaction Kolbe’s reaction Williamson synthesis Rosenmud reduction Gatterman-Koch reaction Nucleophilic addition reaction Clemmensen reduction Wolff-Kishner reduction Aldol reaction Haloform reaction Cross aldol condensation Cannizzaro reaction Hell-Volhard Zelinsky reaction Carbylamine reaction Coupling reaction For your idea, here I am providing the Organic Chemistry syllabus Preparation, properties and reactions of alkanes: Homologous series, physical properties of alkanes (melting points, boiling points and density); Combustion and halogenation of alkanes; Preparation of alkanes by Wurtz reaction and decarboxylation reactions. Preparation, properties and reactions of alkenes and alkynes: Physical properties of alkenes and alkynes (boiling points, density and dipole moments); Acidity of alkynes; Acid catalysed hydration of alkenes and alkynes (excluding the stereochemistry of addition and elimination); Reactions of alkenes with KMnO4 and ozone; Reduction of alkenes and alkynes; Preparation of alkenes and alkynes by elimination reactions; Electrophilic addition reactions of alkenes with X2, HX, HOX (X=halogen) and H2O; Addition reactions of alkynes; Metal acetylides. Reactions of benzene: Structure and aromaticity; Electrophilic substitution reactions: halogenation, nitration, sulphonation, Friedel-Crafts alkylation and acylation; Effect of o-, m- and p-directing groups in monosubstituted benzenes. Phenols: Acidity, electrophilic substitution reactions (halogenation, nitration and sulphonation); Reimer-Tieman reaction, Kolbe reaction. Characteristic reactions of the following (including those mentioned above): Alkyl halides: rearrangement reactions of alkyl carbocation, Grignard reactions, nucleophilic substitution reactions; Alcohols: esterification, dehydration and oxidation, reaction with sodium, phosphorus halides, ZnCl2/concentrated HCl, conversion of alcohols into aldehydes and ketones; Ethers:Preparation by Williamson’s Synthesis; Aldehydes and Ketones: oxidation, reduction, oxime and hydrazone formation; aldol condensation, Perkin reaction; Cannizzaro reaction; haloform reaction and nucleophilic addition reactions (Grignard addition); Carboxylic acids: formation of esters, acid chlorides and amides, ester hydrolysis; Amines: basicity of substituted anilines and aliphatic amines, preparation from nitro compounds, reaction with nitrous acid, azo coupling reaction of diazonium salts of aromatic amines, Sandmeyer and related reactions of diazonium salts; carbylamine reaction; Haloarenes: nucleophilic aromatic substitution in haloarenes and substituted haloarenes (excluding Benzyne mechanism and Cine substitution). Carbohydrates: Classification; mono- and di-saccharides (glucose and sucrose); Oxidation, reduction, glycoside formation and hydrolysis of sucrose. Amino acids and peptides: General structure (only primary structure for peptides) and physical properties. Properties and uses of some important polymers: Natural rubber, cellulose, nylon, teflon and PVC. Practical organic chemistry: Detection of elements (N, S, halogens); Detection and identification of the following functional groups: hydroxyl (alcoholic and phenolic), carbonyl (aldehyde and ketone), carboxyl, amino and nitro; Chemical methods of separation of mono-functional organic compounds from binary mixtures. Concepts: Hybridisation of carbon; Sigma and pi-bonds; Shapes of simple organic molecules; Structural and geometrical isomerism; Optical isomerism of compounds containing up to two asymmetric centres, (R,S and E,Z nomenclature excluded); IUPAC nomenclature of simple organic compounds (only hydrocarbons, mono-functional and bi-functional compounds); Conformations of ethane and butane (Newman projections); Resonance and hyperconjugation; Keto-enol tautomerism; Determination of empirical and molecular formulae of simple compounds (only combustion method); Hydrogen bonds: definition and their effects on physical properties of alcohols and carboxylic acids; Inductive and resonance effects on acidity and basicity of organic acids and bases; Polarity and inductive effects in alkyl halides; Reactive intermediates produced during homolytic and heterolytic bond cleavage; Formation, structure and stability of carbocations, carbanions and free radicals. |
#3
12th February 2016, 12:50 PM
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Re: Organic Chemistry Preparation Tips
Hello sir ! I am pursuing M.sc in Organic chemistry , will you please give me preparation tips for the crack the examination ?
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#4
12th February 2016, 12:50 PM
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Re: Organic Chemistry Preparation Tips
Hello buddy as you want here we gives we you preparation tips for the crack M.sc in Organic chemistry the examination as follows You have to need to give concentration on following points Atoms, molecules, bonding, polar and nonpolar molecules, intermolecular forces, solubilities, Lewis structures, preliminary ideas of resonance, arrow formalism, acids and bases. Introduction to orbitals, molecular orbital description of bonding, hybridization, structure of methane. Alkanes- conformational analysis, structural isomerism and nomenclature, alkyl groups. Alkenes- structure and bonding, nomenclature, E-Z notation, hydrogenation, relative stabilities. Alkynes- structure and bonding, relative stabilities, double and triple bonds in rings. Dienes and the allyl system, conjugation, introduction to the concept of aromaticity. UV spectroscopy. Stereochemistry- chirality, enantiomerism, R-S notation, diastereomerism, optical resolution. Ring systems- strain, stereochemistry of cyclohexane, conformational analysis of cyclohexane and its substituted derivatives, bicyclic and polycyclic compounds. Nuclear Magnetic Resonance (NMR) spectroscopy. Infrared (IR) spectroscopy. Alkyl halides, substitution reactions of alkyl halides- SN 2 and SN 1 mechanisms. Elimination reactions- E1 and E2 mechanisms. Overview of substitution and elimination reactions, oxidation of alcohols, rates and equilibria, syntheses. Acids and bases revisited. Additions to alkenes- mechanism of hydrogen halide additions, regiochemistry, resonance effects, carbocation stabilities, addition of other unsymmetrical reagents, hydroboration, dimerization and polymerization of alkenes. Carbocation rearrangements, addition of halogens to alkenes, oxymercuration, epoxidation and chemistry of oxiranes, cyclopropanation, carbenes, ozonolysis, alkene oxidations with permanganate and osmium tetroxide, addition reactions of alkynes. |
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