S.No. Reagent Function 1 PCl3, PBr3, PI3 Alcohols into Alkyl halides 2 SoCl2, PCl5 Alcohols into Alkyl chlorides & Carboxylic acids into Acid Chlorides 3 HCl/ZnCl2,HBr,HI Alcohols into alkyl halides 4 Cl2/Fe or FeCl3 Cl group substituting on Benzene 5 NaNO2 /HCl 0-50C Diazotisation 6 CuCl,CuBr,CuCN,KI,H2O,
H3PO2 Diazonium Cholride into Chlor Benzene, Bromo Benzene, Benzo nitrile, Iodo Benzene , Phenol,Benzene respectively 7 HBF4 or NaBF4 Diazonium Chloride into Floro Benzene 8 AgF or Hg2F2 or SbF3 or CoF2 Alkyl halides into alkyl florides 9 Na / dry ether Alkyl halides into alkanes 10 NaOH 623/443/368K Chloro benzene to phenol 11 Br2 /FeBr3 Bromination of Benzene 12 Cl2 /FeCl3 Chlorination of Benzene 13 CH3Cl /AlCl3 alkylation of benzene and its derivatives 14 CH-CO-Cl /AlCl3 Acylation on benzene 15 H2SO4 /HNO3 Nitration of benzene 16 (CHCO)2O /AlCl3 O – Acylation of Phenol 17 H2SO4 Sulphonation on Benzene 18 H2O/ H2SO4 alkenes into alcohols Aq KOH Alkyl halide into alcohol 19 BH3 /H2O2 /OH- Alkenes into alcohols (Anti Markownikoff product) 20 NaBH4/ LiAlH4(LAH) Aldehydes, ketones, acids into alcohols, Nito & Cynides , Isocyanides into amines 21 H2/ Ni or H2/Pd reduction of aldehydes, ketones and cynides 22 RMgX/H3O+ Aldehydes, ketones into alcohls 23 O2/H+ Cumene to phenol 24 Na Alcohol or phenol into Sodium alkoxide/Phenoxide 25 (CHCO)2O/ CH-CO-Cl O acylation on phenol or N acylation on Aneline or amine 26 Conc.H2SO4/443K Conversion of primary alcohols into Alkenes 27 Conc.H2SO4/410K Conversion of alcohols into Ethers 28 85% H3PO4 / 440K Secondary alcohol into alkene 29 20% H3PO4/358K Tertiary alcohol into alkene Alcoholic KOH Alkyl halide into alkene 30 CrO3/KMnO4 or K2Cr2O7 in acidic medium oxidation of alcohols into acids 31 Cu /573k dehydrogenation of alcohols gives 10 alcohols into aldehydes and 20 alcohols into ketones & 30 alcohos into alkenes 32 Dil. HNO3 Mono nitration of Phenol 33 Conc.HNO3 tri nitration of phenol 34 Br2 /H2O tri bromination of phenol 35 Br2 /Cs2 mono bromination of phenol 36 NaOH /CO2 Phenol to salicilic acid 37 CHCl3 /NaOH Phenol to salcilaldehyde 38 Zn dust Phenol to Benzene 39 Na2Cr2O7 /H2SO4 or air Phenol to Benzo quinone 40 Zn/Cr2O3 200to 300 atm 573 – 673K CO & H into methanol 41 Invertase Sucrose into Glucose or Fructose 42 Zymase Glucose or Fructose into ethanol 43 HI Ether into alcohol & alkyl halide 44 PCC alcohol to aldehyde 45 Pd /BaSO4,H2 acid chloride into aldehyde 46 SnCl2/HCl/H3O+ Cyanides into aldehydes 47 AlH(i-Bu)2/H2O Cyanides into aldehydes 48 DIBAL-H/H2O Esters into aldehydes 49 CrO2Cl2/H2O Toluene to aldehyde 50 CrO3 /(CH3CO)2O Toluene into Benzaldehyde 51 Cl2/hv Chlorination on alkyl group of Benzene or alkane 52 CO, HCl anhydrous AlCl3 Benzene to Benzaldehyde 53 (CH3)2Cd acid chloride into ketones 54 RMgX/H3O+ Cyanides into ketones 55 HCN Carbonyl compound into cyanohydrin 56 NaHSO3 addition to aldehyde and ketone 57 H2NOH carbonyl compound into oxime 58 H2N-NH2 carbonyl compound into hydrazone 59 H2N-NH-Ph carbonyl compound into Phenyl hydrazone 60 2,4DNP carbonyl compound into 2,4 dinitro phynyl hydrazone 61 H2N-NH-CO-CH3 carbonyl compound into semi carbazide 62 ROH/HCl Aldehydes & ketones into hemiacetal and acetal 63 HO-CH2-CH2-OH/HCl Aldehyde or ketone into ethelene glycol ketone 64 Zn-Hg/HCl carbonyl compound into alkane 65 H2N-NH2 /KOH carbonyl compound into alkane 66 KMnO4/OH-/ K2Cr2O7 /H2SO4 or HNO3 Ketones into mixture of carboxylic acids on prolonged oxidation 67 (Ag(NH3)2)NO3+NaOH Tollen’s test 68 Cu(OH)2 Fehiling’s test 69 NaOH+I2 Iodoform 70 NaOH or Ba(OH)2 aldal condensation 71 Conc KOH or NaOH Cannizaro’s reaction 72 KMnO4 /KOH Toluene/alkyl Benzene into Benzoic Acid 73 H2O/H+ Cyanides into carboxylic acids, amides into carboxylic acids, esters into carboxylic acis and alcohols, acid chlorides or anhydrides into carboxylic acids 74 NaOH Saponificaiton of ester, acid into salt of acid 75 Na2CO3 or NaHCO3 Carboxylic acid test 76 P4O10 or P2O5 Dehydration of acids into anhydride, amides into nitriles 77 ROH/conc H2SO4 Caroxylic acids into esters 78 PCl3, SoCl2, PCl5 Carboxylic acids into acid chlorides 79 NH3 heating Carboxylic acids into amides 80 NaOH/CaO Decarboxylation (acids into alkanes) 81 LiAlH4 Carboxylic acids into alcohols, amides into amines 82 Cl2 /red.P4 HVZ reaction 83 Sn /HCl or Fe /HCl, H2/Pd Reduction of nitro compounds into amines 84 NH3 Alkyl halides into amines 85 H2/ Ni or H2/Pd LiAlH4 Amides into cyanindes 86 KOH/R-X Phthalamide into amine 87 NaOH /Br2 Hoffman bromamide, amide into amine with one ‘C’ less 88 KOH,CHCl3 Amines into Carbyl amines 89 NaNO2/HCl 10 aliphatic amines into alcohols 90 NaNO2/HCl 0 – 50C Aniline into diazonium chloride 91 C6H5SO2Cl Distinguishing 10,20 & 30 amines 92 Br2/H2O Aneline into tri bromo aniline 93 Br2/ CH-CO-Cl /(CHCO)2O Aniline into Bromo Aniline 94 HNO3/ CH-CO-Cl /(CHCO)2O Nitro aniline 95 H2SO4 Sulphonation on aniline 96 CuCl,CuBr,CuCN,KI,H2O,
H3PO2 or CH3-CH2-OH Diazonium Cholride into Chlor Benzene, Bromo Benzene, Benzo nitrile, Iodo Benzene , Phenol,Benzene respectively
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ORGANIC REAGENTS
Description
ENRICHMENT OF CHEMISTRY IN CLASS ROOM TEACHING
Teaching of chemistry needs skill to make the platform for the understanding of the subject. The high order concepts accumulation can sublime and distil off the difficulty of the student. The word chemistry abbreviates the traits of learning:
C - CONFIDENCE, CURIOSITY, CREATIVITY
H- HONESTY AND HEALING
E – EFFORT AND EXCELLENCE
M – MEDITATION
I – INTEREST
S – SINCERIETY
T- TRIAL
R- RESEARCH AND REACTION TIME
Y- YOUTHFULLNESS
The Objectives of teaching is the transition of ideas and concepts, while teaching of Chemistry the difficulties are with the abilities to assimilate the concept and configuration of literature of chemistry.
The dealing of Chemistry subject in junior classes can be framed with the objectives and aspects mentioned.
• The topics should be reviewed and researched to predict all the possible feedbacks
• The concept should be correlated with the daily examples and doings to make the concept relevant and realistic.
• The concept delivered in Junior class needs activity and doings to make the experience of concept.
• The dealing of concept should be empathetically by the Teachers for the taught.
• The concepts deliver should thought provoking and creativity building.
• The teaching should be with proper and comfortable communication. The major problems arise due to communication gaps and accent.
• The Dealing of subject matter should correlate with the previous knowledge and facts the learner encounters with.
• The consequences of the concept and there application should be crystal clear to the taught.
• The High Order Thinking should be envisaged among the student.
The role of teacher fits to the quote of Sir Albert Einstein:
“Dear Stu
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