Nomenclature of Organic Compound Exercise # 4

NOMENCLATURE OF ORGANIC COMPOUND Exercise # 4 1. [Subjective Type Questions] Classify the following compounds as homocyclic, heterocyclic, alicyclic, aromatic, saturated and unsaturated. (A) 2. (B) (C) (D) O Write the common name of the following alkyl groups. (A) CH CH 3 (B) CH CH 3 CH3 (C) C CH3 CH3 CH2 CH3 CH3 (D) –CH2–CH3 (E) CH3-CH2CH2– 3. Indicate the following as 1°, 2° and 3° amines. (A) N H (B) NH CH3 4. Write the priority order of given functional groups. –COOH, –CN, –CHO, –OH, –COCH3, –NH2 5. Write IUPAC name of the following. Me N (C) (D) Me (i) Me (ii) Me CH3 (iii) (iv) CH3 CH CH2 CH3 CH CH CH2 CH3 CH3 CH CH3 6. Write the IUPAC name of following compounds CH3 (i) CH3 CH2 CH C CH3 CH3 CH3 (ii) CH3 CH2 CH2 CH2 CH CH2 CH2 CH2 CH3 CH CH3 CH CH3 CH3 N CH 3 7. Write the correct IUPAC name of the following compounds. CH3 (i) (ii) CH3 CH2 CH2 CH2 CH2 CH C CH2CH3 CH3 CH2 CH2 CH3 H3 C CH3 CH (iii) CH3 CH2 CH2 CH CH CH2 CH2 CH3 C H3C CH3CH3 8. Write IUPAC name of the following : (i) (CH3)3C –CH = CH2 CH3 (iii) CH3 CH2 CH2 C (ii) CH2 = CH – CH = CH2 CH3 CH2 C = CH2 (iv) CH3 9. Write IUPAC name of the following Me (i) 10. Me CH3 (ii) CH3 CH C CH (iii) CH3 C C CH CH3 CH3 Write correct IUPAC name of the following Me (i) 11. (ii) (iii) (iv) Write the IUPAC name of the following compounds. CH3 (A) C(CH3)3 CH3 (B) (C) H3C 12. CH CH3 Identify the parent chain in the following compounds as ring or side chain. (A) (B) (C) (D) (E) (F) Et NOMENCLATURE OF ORGANIC COMPOUND 13. Write the IUPAC name of the following. (A) 14. (B) (C) (D) Write the correct IUPAC name of the following compounds. (CH2)5CH3 (A) (B) CH3(CH2)5 (CH2)5CH3 CH2 CH = CH2 CH2 CH2 CH=CH CH2 CH3 (C) 15. Write IUPAC name of the following ethers : (A) 16. (D) O (B) O (C) OH (A) (B) (C) (CH3)3COH (D) O OH CH2 CH CH2 CH3 CH3 CH CH2 CH2 OH Cl Write the correct IUPAC name of the following compounds. CH3 O (A) CH3 CH CH 2 CH2 CCH 2Cl (C) CH3 OCH 2CH2N 18. Cl Writhe the correct IUPAC name of the following compounds. CH=CH COCH3 17. (D) O H CH3 Cl CH3 F (B) CH3 CH CH2 CH CH CH2 CH3 Br Cl CH2 CH2 CH3 (D) CH3 CH CH CH2 CH CH3 Br Write IUPAC name of the following compounds. (A) (B) (C) (D) 19. Write IUPAC name (A) 20. (B) (C) Write the correct IUPAC name of the following compounds. (A) (B) (C) (D) 21. A certain substances contains only carbon and hydrogen and has a molecular weight of 70. Photochemical chlorination gave only one monochloride. Write the structure and IUPAC name of the hydrocarbon and its monochloride. 22. A hydrocarbon of molecular weight 72 g mol–1 has a 2-methyl group. What is the IUPAC name? Also drawn its bondline structure ? 23. Write the structure and give IUPAC systematic name of an alkane or cycloalkane with the formula : (A) C8H18 that has only primary hydrogen atoms (B) C6H12 that has only secondary hydrogen atoms. 24. What is wrong with the names given for these compounds provide the correct name for each : 25. (i) (ii) (iii) (iv) Write the IUPAC name for each the following structures : (A) 26. (B) (C) Write down the correct priority for citation as principal groups : O C , –COOH, –CHO, –OH, –Br, –. NOMENCLATURE OF ORGANIC COMPOUND 27. Write down the correct IUPAC name of the following compounds : CH3 CH 3 CN C=C CH C CH C OC 2H 5 O O (i) CH3 O 1 (iii) 1' 2 2' 3' C O CH CH3 O CH3 (ii) OH 4' CH2CH2COCH3 28. Write down the structure of the given compounds : (i) Bircylo [4.3.1] decane (ii) 1-(3'-methylcyclopentyl) benzene (iii) 4-ethyl-2-methyl-1-propylcyclohexane 29. Answer the following : (i) What would be the molecular formula for a straight chain hydrocarbon having 8 carbon atoms with (A) All C–C single bond, (B) Three C–C double bond, (C) one C–C triple bond and one C–C double bond. (ii) What is the minimum number of carbon atoms in (A) a branched alkane. (B) cyclo-alkane 30. Give the IUPAC names of the following compounds : CH3 (i) H3C N C CH2 CH3 CH3 C2H5 (ii) CH2(COOH)2 31. 32. 33. 34. (iii) OH O O O 35. 36. OH O 37. 38. OH 39. 40. CH2 CHCH3 O CH3 CH=C CH2 COOH CONH2 CH3 41. CH3 42. CH3 CH3 COOH C2H5 43. 44. O C CH2CH3 CH2 45. 46. OH CH3 CHCH2CH3 O C OC2H5 47. 48. NH2 O CH 2CH 2CH=CH 2 49. 50. CH3 O C OCH3 Br CH3 O 51. 52. OCH3 53. 54. 55. 56. O 57. Cl CH2 C CH2 CH CH3 58. OH NH2 NO2 59. CH=CH CH CH=CH2 COCH2 CH CH=CH CH3 60 OC2H5