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GRE Chemistry Organic

Subjects : gre, science, chemistry
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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 carbocation formed; relieved by deprotonation

2. 2 Sulfide linkages in place of aldehyde

3. Less hindered carbon center; chiral inversion

4. Can protect a ketone

5. Differ in rotation about sigma bonds

6. Less substituted elimination; sterically hindered

7. Thionyl chloride

8. Chiral - with superimposable mirror image

9. Attach tosyl group onto alcohol

10. Differ in position of atoms

11. 4-pi system + 2-pi system --> Ring formation

12. Ch2I2 - Zn(Cu)

13. Anti-alignment required

14. Formation of ethoxide

15. Alcohol closes ring to form oxirane

16. Reduces one bond of benzene ring

17. OCH3

18. Donate electrons to aromatic ring

19. Formation of salcohol from alkene

20. CH2-

21. Benzaldehyde

22. Bound to adjacent atoms

23. Highly reactive carbonyl

24. Reduces ketone to alkane

25. Oxidize to -COOH

26. Replaces thioacetal/ketal with carbonyl

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

28. Splits an ether into alkyl halides

29. Reacts with alkene to form oxirane

30. Cis/trans Isomers

31. Reduces Ar-CH3 to -COOH

32. More substituted elimination; more stable

33. Ph-NH2

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

35. Elimination to form alkene

36. R-SO3H

37. Aldehyde / ketone synthesis

38. Nucleophile adds to ketone (forming alcohol)

39. Differ in fixed geometrical arrangement of atoms

40. Oxidize to -CHO

41. Non-superimposable mirror image

42. Allylic Substitution

43. R2C=N-OH

44. Forms carboxylic acid; releases N

45. Cycloformation

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

47. Split an alkene into 2 carbonyls

48. H2O2

49. Cyclic ether

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