Which one of the following forms propane nitrile as the major product?
Ethyl bromide + alcoholic KCN
Propyl bromide + alcoholic KCN
Propyl bromide + alcoholic AgCN
Ethyl bromide + alcoholic AgCN
Benzylamine is a stronger base than aniline because
the lone pair of electrons on the nitrogen atom in aniline is delocalised
the lone pair of electrons on the nitrogen atom in aniline is not involved in resonance
benzylamine has a higher molecular mass than aniline
the lone pair of electrons on the nitrogen atom in benzylamine is delocalised
Which of the following pairs are correctly matched?
Reactants | Products | |
(i) | RX+ AgOH (aq) | RH |
(ii) | RX + AgCN (alc) | RNC |
(iii) | RX + KCN(alc) | RNC |
(iv) | RX + Na(ether) | R-R |
only I
I and II
II and III
II and IV
Which one of the following gives amine on heating with amide?
Br2 in aqueous KOH
Br2 on alcoholic KOH
Cl2 in sodium
sodium in ether
In the given set of reactions, . The IUPC name of product Y is
N-methylpropanamine
N-isopropylmethanamine
Butan-2-amine
N-methylpropan-2-amine
One of the following amide will not undergo Hofmann bromamide reaction
CH3CONH2
CH3CONHCH3
C6H5CONH2
CH3CH2CONH2
B.
CH3CONHCH3
Hofmanm bromamide reaction is
.
This reaction is given by primary amide only. So only option (b) is a secondary amide, and it will not undergo Hofmann bromamide reaction.
In the following sequence of reactions,
A CH3CH2OH
The compound A is
propane nitrile
ethane nitrile
CH3NO2
CH3NC
The correct order of increasing basic nature for the bases NH3, CH3NH2 and (CH3)2NH in aqueous solution
CH3NH2 < NH3 < (CH3)2NH
NH3 < CH3NH2 <(CH3)2NH
CH3NH2 < (CH3)2NH < NH3
(CH3)2NH < NH3 <CH3NH2
Galbriel phthalimide synthesis is used in the preparation of primary amine from phthalimide, which of the following reagent is not used during the process?
KOH
NaOH
HCl
Alkyl halides
High basicity of Me2NH relative to Me3N is attributed to :
effect of solvent
inductive effect of Me
shape of Me2NH
shape of Me3N