| Qu1: |
Arrange the following
in order of relative reactivity towards nucleophilic addition : |
|
| (a) (CH3)2C=O |
(b) CH3CHO |
(c) H2C=O |
|
| Qu 2: |
What are the major
products of reaction of each of the following with (i) propanal and (ii)
propanone ? |
|
| (a) LiAlH4 /
THF then acidic workup |
(b) PhMgBr then acidic
workup |
| (c) 1,2-ethanediol,
H+, heat |
(d) 2,4-dinitrophenylhydrazine |
| (e) Ph3PCHCH3 |
(f) NH2OH |
|
|
|
| Qu 3: |
Each of the following
primary amine derivatives has more than one heteratom, yet only one product
is observed. |
|
Rationalise the
nucleophilic atom in each case :
| hydroxyl amine, NH2OH |
|
semicarbazide,
NH2NHCONH2 |
|
| Qu 4: |
How can 1-bromopropane
be used to prepare each of the following ? |
|
| (a) ethanal |
(b) propanone |
| (c) propanal |
(d) 2-butanone |
| (e) pentanal |
|
|
|
|
| Qu 5: |
Design efficient
synthesis of the following from cyclohexanol: |
|
|
|
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