| Qu 1: |
Which of the following are organometallic reagents ? |
|
| (a) CH3CH2ONa |
(b) CH3CH2Li |
| (c) CH3CH2BH2 |
(d) (CH3CH2)2Zn |
| (e) CH3CH2MgBr |
(f) CH3CºCNa |
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| Qu 2: |
Which of the following "pictures" best represents the polarity of organometallic
compounds ? |
|
| (a) R M |
(b) R+ M- |
(c) R- M+ |
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| Qu 3: |
Arrange the following in order of basicity, most basic to least basic. |
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CH3CH2O-, CH3CH2-,
CH2=CH-, CH3CºC-,
CH3CH2OH
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| 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 |
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| Qu 5: |
How would you prepare diphenyl lithium cuprate ? |
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| 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 |
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| 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. |
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| (a) 1-phenylethanol |
(b) diphenylmethanol |
| (c) benzyl bromide |
(d) 2-phenylpropene |
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