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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , JAM Organic chemistry, 1. Identify the major product, , Solution: Beckmann rearrangement, , 2. Identify the major product, , Solution: Epoxidation followed by rearrangement, , 3. Identify the major product, , Solution: Levis acid catalysed epoxide ring opening followed by rearrangement, , 4. Identify products A,B and C, , Solution: Pinacol-pinacolone rearrangement followed by reduction and elimination, , Page | 1, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , 5. Identify the major product, , Solution: Pinacol-pinacolone rearrangement, , 6. Identify the major product, , Solution: Curtius rearrangemet, , 7. Arrange the following in the increasing order of their pKa value, , Solution: acidity α 1/pKa, a<b<e<d<c, 8. Identify the major product, Page | 2, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , Solution: Nucleophilic addition reaction to the carbonyl compound, , 9. Identify product ‘A’ and ‘B’., , Solution: Nucleophilic substitution reaction at carbonyl compound, , 10. Identify the number of 1H-NMR spectrum of the given compounds, , Solution:, a-1, b-3, c-3, d-3 & e-2, 11. Identify the chiral compounds from the following, , Page | 3, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , Solution: a) Achiral-Due to the presence plane of symmetry, b) Chiral-No plane of symmetry, c)Achiral-Plane of symmetry, d)Achiral-plane of symmetry, e)Chiral-No plane of symmetry(spirane), 12. Assign R and S, , Solution: a)R, b)R, , c)R, , 13. Identify the major product, , Solution:SN1 reaction, , 14. Identify the product, , Page | 4, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , Solution:E1 elimination, , 15. Identify the major product, , Solution: Hofmann elimination as well as E1CB mechanism, , 16. Identify the major product, , Solution: E2 elimination reaction in cyclohexane ( chair conformation), , 17. Identify the major products from the following, , Solution: E2 elimination in which departing groups should be anti-periplanar in chair conformation, , Page | 5, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , 18. Identify the products with proper steriochemistry, , Solution: Ati-periplanar addition reaction to the double bond, , Mechanism, , 19. Identify the major product, , Solution:Addition reaction, , 20. Identify the major product, Page | 6, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , Solution: Aromatic electrophilic substitution reaction, , 21. How would you carry out the following conversion, , Solution:Aldol condensation reaction, , 22., , Solution: Carbene addition, , 23., , Solution: Simmon-smith reaction at electron rich centre, , Page | 7, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , 24., , Solution: 1,4 addition, , 25. Correct set of reagent for the following conversion is, , Solution:Option:d, , Page | 8, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , 28. Major product in the following reaction is, , Solution:Option b, , 29. Identify the major product, , Page | 10, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
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Alchemi, CSIR-NET/GATE/JAM Coaching center for chemistry, Opposite BEM u .p school ,puthiyara road,, Stadium junction, Calicut, 9656078979, 9645941233, 9846545884, , Solution:Option.3, Stabilized ylid give E-alkene and aldehyde is more reactive than ketone, 30., , Solution: Option D, , 31. A, , Solution:Birch reduction followed by epoxidation(Option:2), 32. Identify the major product, , Solution: Inramolecular claisen condensation (Dieckmann condensation reaction), , Page | 11, ALCHEMI CSIR-NET/GATE/JAM COACHING FOR CHEMISTRY CALICUT-9656078979,9846545884
