Which one of the following methods are used to prepare Me3COEt with good yield?
Mixing EtONa with Me2CCl
Mixing Me2CONa with EtCl
Heating a mixture of (1:1) EtOH and Me2COH in the presence of conc. H2SO4
Treatment of Me3COH with EtMgI
B.
Mixing Me2CONa with EtCl
Me3CONa Me3COEt
This reaction is known as Williamson's synthesis.
Upon treatment with I2 and aqueous NaOH, which of the following compounds will form iodoform?
CH3CH2CH2CH2CHO
CH3CH2COCH2CH3
CH3CH2CH2CH2CH2OH
CH3CH2CH2CH(OH)CH3
Upon treatment with Al(OEt)3 followed by usual reactions (work up), CH3CHO will produce:
only CH3COOCH2CH3
a mixture of CH3COOH and EtOH
only CH3COOH
only EtOH
Which one of the following properties are exhibited by phenol?
It is soluble in aq. NaOH and evolves CO2 with aq. NaHCO3
It is soluble in aq. NaOH and does not evolve CO2 withe aq. NaHCO3
It is not soluble in aq. NaOH but evolves CO2 with aq. NaHCO3
It is insoluble in aq. NaOH and does not evolve CO2 with aq. NaHCO3
The basicity of aniline is weaker in comparison to that of methylamine due to:
hyper conjugative effect of Me-group in MeNH2
resonance effect of the phenyl group in aniline
the lower molecular weight of methylamine as compared to that of aniline
resonance effect of -NH2 group in MeNH2
Under identical conditions, the SN1 reaction will occur most efficiently with:
tert-butyl chloride
1-chlorobutane
2-methyl-1-chloropropane
2-chlorobutane
Identify the method by which Me3CCO2H can be prepared:
Treating 1 mole of MeCOMe with 2 moles of MeMgl
Treating 1 mole of MeCO3Me with 3 moles of MeMgI
Treating 1 mole of MeCHO with 3 moles of MeMgl
Treating 1 mole of dry ice with 1 mol of MeCMgI
The most contributing tautomeric enol form of MeCOCH2CO2 Et is:
CH2=C(OH)CH2CO2Et
MeC(OH)=CHCO2Et
MeCOCH=C(OH)OEt
CH2=C(OH)CH=C(OH)OEt
By passing excess Cl2(g) in boiling toluene, which one of the following compounds is exclusively formed?
An equimolar mixture of toluene and chlorobenzene is treated with a mixture of conc. H2SO4 and conc. HNO3. Indicate the correct statement from the following.
p-nitrotoluene is formed in excess
equimolar amounts of p-nitrotoluene and p-nitro chlorobenzene are formed
p-nitro chlorobenzene is formed in excess
m-nitro chlorobenzene is formed in excess