| Qu 1: |
Which of the following are organometallic
reagents ? |
| |
| (a) CH3CH2ONa |
(b) CH3CH2Li |
| (c) CH3CH2BH2 |
(d) (CH3CH2)2Zn |
| (e) CH3CH2MgBr |
(f) CH3C≡CNa |
|
| Qu 2: |
Which of the following "pictures"
best represents the polarity of organometallic compounds ? |
| |
| (a) R M |
(b) R+ M- |
(c) R- M+ |
|
| |
|
| Qu 3: |
Arrange the following in order
of basicity, most basic to least basic. |
| |
CH3CH2O-,
CH3CH2-, CH2=CH-,
CH3C≡C-, CH3CH2OH
|
| |
|
| Qu 4: |
What are the main products of
the reaction of each of the following with ethyl magnesium bromide followed
by a regular acidic work-up ? |
| |
| (a) CH3CH2CHO |
(b) C6H5CHO
(benzaldehyde) |
| (c) CH3COCH3
(propanone) |
(d) D2O |
| (e) C6H5CO2CH3 |
(f) C6H5CO2H |
| (g) CH3CH2OH |
(h) CH3CH2Br |
|
| Qu 5: |
How would you prepare diphenyl
lithium cuprate ? |
| |
|
| Qu 6: |
Which of the following reagents
is best suited to preparing 1-phenylbutane from 1-bromobutane ? |
| |
| (a) C6H5Li |
(b) C6H5MgI |
(c) (C6H5)2LiCu |
(d) (C6H5)2Zn |
|
| Qu 7: |
Try using retrosynthesis to
plan an efficient synthesis based on Grignard reactions for the following
from bromobenzene and any necessary organic or inorganic reagents. |
| |
| (a) 1-phenylethanol |
(b) diphenylmethanol |
| (c) benzyl bromide |
(d) 2-phenylpropene |
|
|
|
|
|
