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GRE Chemistry Organic

Subjects : gre, science, chemistry
  • Answer 50 questions in 15 minutes.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Cycloformation

2. Reduces one bond of benzene ring

3. Ch2I2 - Zn(Cu)

4. Oxidize to -CHO

5. Thionyl chloride

6. Reduces Ar-CH3 to -COOH

7. Formation of salcohol from alkene

8. Anti-alignment required

9. Attach tosyl group onto alcohol

10. R2C=N-OH

11. Reduces ketone to alkane

12. Non-superimposable mirror image

13. Aldehyde / ketone synthesis

14. Reacts with alkene to form oxirane

15. Differ in rotation about sigma bonds

16. Replaces thioacetal/ketal with carbonyl

17. 4-pi system + 2-pi system --> Ring formation

18. Oxirane ring opening

19. Tertiary carbocation formed; relieved by deprotonation

20. Oxidize to -COOH

21. Elimination to form alkene

22. Forms carboxylic acid; releases N

23. Formation of ethoxide

24. Split an alkene into 2 carbonyls

25. R-SO3H

26. Uses Hg(OAc)2 + R'OH; forms ether from alkene

27. More substituted elimination; more stable

28. Donate electrons to aromatic ring

29. Differ in position of atoms

30. Nucleophile adds to ketone (forming alcohol)

31. Allylic Substitution

32. Tertiary carbon center; racemic

33. Splits an ether into alkyl halides

34. R-NH2 + NaNO2/HCl --> R-N=N+ Cl-

35. Cyclic ether

36. One carbon away from aryl group can be reduced with Pd / H2

37. Can protect a ketone

38. Alcohol closes ring to form oxirane

39. Benzaldehyde

40. OCH3

41. Chiral - with superimposable mirror image

42. Bound to adjacent atoms

43. Less hindered carbon center; chiral inversion

44. 2 Sulfide linkages in place of aldehyde

45. Ph-NH2

46. Cis/trans Isomers

47. H2O2

48. Highly reactive carbonyl

49. Bound to same atom

50. Differ in fixed geometrical arrangement of atoms