Fructose reduces Tollen's reagent due to
asymmetric carbons
primary alcoholic group
secondary alcoholic group
enolisation of fructose followed by conversion to aldehyde by base
The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds
III > II > I
II > I > III
I > III > II
I > II > III
Match the compounds given in List I with List II and select the suitable option using the codes given below.
List I | List II | ||
A. | Benzaldehyde | 1. | Phenolphthalein |
B. | Phthalic anhydride | 2. | Benzoin condensation |
C. | Phenyl benzoate | 3. | Oil of wintergreen |
D. | Methyl salicylate | 4. | Fries rearrangement |
A B C D
4 1 3 2
A B C D
4 2 3 1
A B C D
2 3 4 1
A B C D
2 1 4 3
An alkene having molecular formula C8H12 on ozonolysis yields glyoxal and 2, 2-dimethyl butane-l, 4-dial. The structure of alkene is
Which of the following is a Gattermann aldehyde synthesis?
C.
Gattermann reaction is formylation method of aromatic ring compounds.
In this reaction, the benzene is added with Hydrocyanic acid and Friedel craft's catalyst AlCl3 to form benzene diazonium chloride which on further hydrolysis produces as aldehyde. In such reaction, copper acts as a catalyst.