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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. Tertiary carbon center; racemic

2. Allylic Substitution

3. Tertiary carbocation formed; relieved by deprotonation

4. Differ in fixed geometrical arrangement of atoms

5. Elimination to form alkene

6. Ph-NH2

7. Aldehyde / ketone synthesis

8. Formation of ethoxide

9. Attach tosyl group onto alcohol

10. Ch2I2 - Zn(Cu)

11. Donate electrons to aromatic ring

12. Benzaldehyde

13. More substituted elimination; more stable

14. Can protect a ketone

15. Anti-alignment required

16. Differ in position of atoms

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

18. Less hindered carbon center; chiral inversion

19. Non-superimposable mirror image

20. Oxidize to -COOH

21. Less substituted elimination; sterically hindered

22. Oxirane ring opening

23. Best with electron withdrawing group ortho/para to substitution site

24. Cycloformation

25. Oxidize to -CHO

26. 2 Sulfide linkages in place of aldehyde

27. Cis/trans Isomers

28. Reduces Ar-CH3 to -COOH

29. Highly reactive carbonyl

30. Split an alkene into 2 carbonyls

31. Thionyl chloride

32. Differ in rotation about sigma bonds

33. Reduces ketone to alkane

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

35. Splits an ether into alkyl halides

36. Formation of salcohol from alkene

37. Nucleophile adds to ketone (forming alcohol)

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

39. CH2-

40. R2C=N-OH

41. Replaces thioacetal/ketal with carbonyl

42. Cyclic ether

43. Chiral - with superimposable mirror image

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

45. H2O2

46. Alcohol closes ring to form oxirane

47. Bound to adjacent atoms

48. Reacts with alkene to form oxirane

49. R-SO3H

50. Forms carboxylic acid; releases N