SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
Search
Test your basic knowledge |
GRE Chemistry Organic
Start Test
Study First
Subjects
:
gre
,
science
,
chemistry
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
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. Highly reactive carbonyl
Thioacetal
Acyl Chloride
Oxime
Peroxyacid
2. One carbon away from aryl group can be reduced with Pd / H2
Oxidizes amine groups
Acyl Chloride
Forms cyclopropane ring from alkene
Benzyl hydrogenolysis
3. Replaces thioacetal/ketal with carbonyl
Chromic Acid
H+ - HgCl2 - H2O
NBS
Tosylation
4. Anti-alignment required
Stereoisomers
Clemmenson reaction
E2 Elimination
Oxidizes amine groups
5. Attach tosyl group onto alcohol
Tosylation
HBr or HI cleavage
1 -3-dithiane + BuLi / R-OH
Oxime
6. R-SO3H
O-P Directors
SN1
RSH + KMnO4
Diazotization
7. Benzaldehyde
Forms cyclopropane ring from alkene
Benzene + CO + HCl (w/ AlCl3)
Oxime
KMnO4
8. Forms carboxylic acid; releases N
Ozonolysis
Geminal
Nitrile + H2O/H+
1 -3 Dihalide + Zn
9. Thionyl chloride
SOCl2
Chromic Acid
RSH + KMnO4
Aniline
10. Cis/trans Isomers
Geometrical isomer
1 -3 Dihalide + Zn
RSH + KMnO4
Anti-orientation
11. Reacts with alkene to form oxirane
Chromic Acid
Peroxyacid
Diels-Alder
Thioacetal
12. Formation of salcohol from alkene
Nitrile + H2O/H+
Hg(OAc)2
E1 Elimination
Anti-orientation
13. Differ in fixed geometrical arrangement of atoms
Stereoisomers
Constitutional Isomer
Benzyl hydrogenolysis
O-P Directors
14. Non-superimposable mirror image
Geometrical isomer
Diels-Alder
Chromic Acid
Enantiomer
15. Less hindered carbon center; chiral inversion
Vicinal
SN2
Birch reduction
HBr or HI cleavage
16. Differ in position of atoms
Constitutional Isomer
Vicinal
1 -2 Dihalide + Zn
RSH + KMnO4
17. Ph-NH2
Thioacetal
1 -2 Dihalide + Zn
Nucleophilic Aromiatic Substitution
Aniline
18. Elimination to form alkene
1 -3-dithiane + BuLi / R-OH
Peroxyacid
HBr or HI cleavage
1 -2 Dihalide + Zn
19. R-NH2 + NaNO2/HCl --> R-N=N+ Cl-
Methoxy group
H+ - HgCl2 - H2O
Diazotization
KMnO4
20. R2C=N-OH
Benzene + CO + HCl (w/ AlCl3)
Oxime
Forms cyclopropane ring from alkene
Pyridine
21. Alcohol closes ring to form oxirane
Thioacetal
Halohydrin + Base
Anti-orientation
Thioacetal
22. 2 Sulfide linkages in place of aldehyde
SN1
Halohydrin + Base
Chromic Acid
Thioacetal
23. Splits an ether into alkyl halides
HBr or HI cleavage
Nucleophilic Aromiatic Substitution
Chromic Acid
O-P Directors
24. Bound to adjacent atoms
RSH + KMnO4
Geminal
Vicinal
Birch reduction
25. Reduces ketone to alkane
C=O + Zn - Hg / HCl
O-P Directors
Clemmenson reaction
Addition of Alkali Metal to alcohol
26. H2O2
Diazotization
Oxidizes amine groups
SOCl2
SN2
27. Oxirane ring opening
Thioacetal
Oxirane
Anti-orientation
1 -3-dithiane + BuLi / R-OH
28. Cyclic ether
C=O + Zn - Hg / HCl
Anti-orientation
Enantiomer
Oxirane
29. Cycloformation
1 -3 Dihalide + Zn
Thioacetal
Saytzeff Product
HBr or HI cleavage
30. Reduces one bond of benzene ring
Hg(OAc)2
Saytzeff Product
Birch reduction
Diazotization
31. Differ in rotation about sigma bonds
Saytzeff Product
E2 Elimination
Conformational Isomer
Peroxyacid
32. Bound to same atom
Solvomercuration-demercuration
Geminal
Ozonolysis
E1 Elimination
33. Uses Hg(OAc)2 + R'OH; forms ether from alkene
Benzyl hydrogenolysis
Tosylation
Solvomercuration-demercuration
Peroxyacid
34. 4-pi system + 2-pi system --> Ring formation
Nitrile + H2O/H+
NBS
Chromic Acid
Diels-Alder
35. Nucleophile adds to ketone (forming alcohol)
Vicinal
Nucleophilic Addition
Acyl Chloride
Hg(OAc)2
36. Reduces Ar-CH3 to -COOH
Anti-orientation
Forms cyclopropane ring from alkene
Enantiomer
KMnO4
37. Donate electrons to aromatic ring
SOCl2
O-P Directors
Clemmenson reaction
E1 Elimination
38. Split an alkene into 2 carbonyls
Enantiomer
Ozonolysis
Addition of Alkali Metal to alcohol
Clemmenson reaction
39. Ch2I2 - Zn(Cu)
Forms cyclopropane ring from alkene
SOCl2
Nucleophilic Aromiatic Substitution
C=O + Zn - Hg / HCl
40. Oxidize to -CHO
Solvomercuration-demercuration
Conformational Isomer
Hofmann Product
Pyridine
41. Less substituted elimination; sterically hindered
Hofmann Product
Pyridine
Vicinal
Hg(OAc)2
42. Chiral - with superimposable mirror image
Addition of Alkali Metal to alcohol
Nitrile + H2O/H+
Meso compound
Geminal
43. Can protect a ketone
Thioacetal
Acyl Chloride
Conformational Isomer
1 -3 Dihalide + Zn
44. Best with electron withdrawing group ortho/para to substitution site
KMnO4
1 -3 Dihalide + Zn
SOCl2
Nucleophilic Aromiatic Substitution
45. Aldehyde / ketone synthesis
Geminal
Halohydrin + Base
Solvomercuration-demercuration
1 -3-dithiane + BuLi / R-OH
46. CH2-
Geometrical isomer
Peroxyacid
C=O + Zn - Hg / HCl
1 -2 Dihalide + Zn
47. Tertiary carbocation formed; relieved by deprotonation
Birch reduction
E1 Elimination
Saytzeff Product
Thioacetal
48. More substituted elimination; more stable
1 -3 Dihalide + Zn
Saytzeff Product
Addition of Alkali Metal to alcohol
Nitrile + H2O/H+
49. Tertiary carbon center; racemic
E2 Elimination
Stereoisomers
SN1
Nitrile + H2O/H+
50. Allylic Substitution
Stereoisomers
Conformational Isomer
Saytzeff Product
NBS