A compound gives a positive test with I2/NaOH and is extracted from benzene by saturated NaHSO3, It may be :
CH3(CH2)4CHO
CH3(CH2)3COCH3
CH3CH2COCH2CH3
CH3(CH2)4CH2OH
Reactant (A) and (B) is:
Ph-CH2-CH=O + NH2-OH
Ph-CH=O + NH2-OH
Ph-OllC-CH3 + NH2-NH2
Ph-OllC-CH3 + NH2-OH
CH3-OllC-OHCa(OH)2→∆(A)
Product (A) is :
In which of the following compounds the methylenic hydrogens are the most acidic ?
CH3COCH2CH3
CH3CH2COOC2H5
CH3CH2CH(COOC2H5)2
CH3COCH2CN
Ph-CH3CrO2Cl2→(A)conc.KOH→Ph-CH2OH + (B)
Product (B) of above the raction is :
Ph-CO2H
Ph-CO-2
Ph-CHO
Ph-CH3
Product (C) of the reaction is :
Product (A) and (C) is :
Ph-OHlCH-CH3PCC→(A)NH2-NH-O∥C-NH2→(B)
Product (B) is :
Ph-ClCH3=N-NH-OllC-NH2
Ph-CH3lC=N-OllC-NH-NH2
Ph-CH=N-NlCH3-OllC-NH2
Ph-CH3lCH-NH-OllC-NH-NH2
(A) and (B) is differentiated by :
NaH
2-4 DNP
Tollen's reagent
NaHSO3
CH2—CH2—CO2H ∆→BaCO3 ANH2—NH2→ Bheat →KOH(C), |CH2—CH2—CO2H
Product (C) obtained is :
() CH3-CH=CH-CH2
&nsp;(b)
()
CH3-O∥C-HHCN→(A)H3O⊕→(B)→△(C)LiAlH4→(D)HIO4→HCHO + (E)
Compound (C) can show geometrical isomerism, Product (E) of the reaction will be :
CH3-O∥C-CH3
CH3-CH2-O∥C-H
CH3-CHO
HCHO
Arrange in their increasing order of equilibrium constants for hydraion ?
(a) A < B < C < D < E
CH3-O∥C(A)-CH3, CH3-O∥C(B)-H, CH3-O∥C (C)-CH2-Cl, H-O∥C(D)-H, Cl-CH2(E)-O∥C-H
A < C < B < E < D
A < C < E < B < D
C < A < B < E < D
Ph-CH2-CN(1)EtONA→(2)CH3-O∥C-Cl(3) H3O⊕/∆ (P); Product (p) of the reaction will be :
() Ph-CH2-O∥C-H
() Ph-CH2-O∥C-CH3
() Ph-CHlCH3-O∥C-H
() Ph-CHlCH3-O∥C-CH3
(A)Symmetrical ketone LiAlH4→(B)H⊕→∆ Diastereomers Reactent (A) is :
() CH3-O∥C-CH3
() CH3-O∥C-CH2-CH3
() CH3-CH2-CH2-CH=O
Molecular weight of compound (A) is:
58
120
60
182
Product (B) is:
() Ph-NH-O∥C-CO2H
() Ph-NH-O∥C-CH2-CO2H
This conversion can be achieved by :
Dehydration, Hydrolysis
Retro aldol and further condensation
Perkin condensation & Clemmensen reduction
Clemmensen and Perkin condensation
Which of the following is the correct order of decarboxylation of β-keto carboxylate anion ?
() a > b > c > d
+ CH3-NH2→ Product of the reaction is :
Which β-keto acid shown will not undergo decarboxylation ?
O ||Ph-C-CH2-CO2H
O ||CH2-C-CH2-CO2H
CH3-O∥C-CH2-CH2-CH2-CH2-O∥C-HHO-/∆→ (A73%) Product (A) is:
Ph-CH=CHCHO + CH3CH=CHCHObase→ErOH, ∆ (A) 87%; product of this reaction is :
() Ph-(CH=CH)2-CHO
() Ph-(CH=CH)3CHO
() Ph-(CH=CH)4CHO
() Ph-CH=CH-CH=CH-CH3
CH3CHO10%NaOH→5°C→∆H2→Ni(A) ; Product (A) of the reaction is :
Propanol
ethanol
butanol
pentanol
A 1. dil NaOH→2. ∆
Reactant (A) is?
1.CH3-O∥C-(CH2)5-O∥C-CH3
2.CH3-O∥C-(CH2)4-O∥C-CH3
3.H-O∥C-(CH2)5-O∥C-H
4.CH3-O∥C-(CH2)4-CH2-OH
CH3-O∥C-(CH2)5-O∥C-CH3
CH3-O∥C-(CH2)4-O∥C-CH3
H-O∥C-(CH2)5-O∥C-H
CH3-O∥C-(CH2)4-CH2-OH
The reaction,
Compare enolate A with enolate B.
Which of the following statements is true?
A is more stable than B
PCC→(A) dil. NaOH→∆(B)
Identify the principal product of the following reaction?
NaOH→ethanol, water, heatH2O +?
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