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WorksheetsOrganic Chemistry - Class Test III
Total questions: 10
Worksheet time: 20mins
Which of the following abstract a proton from triphenyl methyl phosphonium salt?
Methyl lithium
n-butyl lithium
Lithium aluminium hydride
Phenyl lithium
Which of the following ylide reacts with cyclohexanone gives Ethylidene cyclohexane?
(C6H5)3P=CH2CH2CH3
(C6H5)3P=CH2
(C6H5)3P=CH2CH2=CH2
(C6H5)3P=CH2CH3
Identify the intermediate formed in Wittig reaction.
Carbocation
Ylide
Betaine
Carbene
Which of the following aldehyde reacts with (C6H5)3P=CH2 gives 1-propene?
Methanal
Ethanal
Propanal
Ethanol
Organozinc compounds generates ____________.
free radicals
carbocation
carbanion
carbene
Dehydration and hydrolysis of β-hydroxy ester gives ___________.
α,β-unsaturated ester
α,β-unsaturated aldehyde
α,β-unsaturated ketone
α,β-unsaturated acid
Which of the following base is used in Knoevenagel reaction?
NaOH
C5H5N
Na2CO3
C6H5NH2
Acetaldehyde on reaction with malonic ester gives __________.
Acetic acid
Formic acid
Citric acid
Crotonic acid
Base abstract a proton from malonic ester gives __________.
Carbene
Carbanion
Carbocation
Carbonium ion
Reformatsky reaction is carried out in the presence of
NaOH
Cu
Zn
Li
