Advertisements
Advertisements
Question
How will you convert ethanal into the following compound?
But-2-enoic acid
Advertisements
Solution
\[\ce{\underset{Ethanal}{2CH3CHO}->[dil.NaOH][Aldol condensation ]\underset{but-2-enal}{CH3CH = CHCHO}->[Ag(NH3)^+2OH-][Tollens' reagent]\underset{But-2-enoic acid}{CH3CH = CHCO2H}}\]
APPEARS IN
RELATED QUESTIONS
Distinguish between:
C6H5-COCH3 and C6H5-CHO
Give a simple chemical test to distinguish between the following pair of compounds :
CH3CH2CHO and CH3CH2COCH3
Give a simple chemical test to distinguish between the following pair of compounds:
Benzoic acid and Ethyl benzoate
An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.
Which of the following compounds will give butanone on oxidation with alkaline \[\ce{KMnO4}\] solution?
Which sugar does not reduce Fehling's solution?
Solvent used for dewaxing of petroleum products are
Acetone and acetaldehyde are differentiated by
Acetaldehyde cannot show?
Fehilng's test is positive for
Which of the following tests/reactions is given by aldehydes as well as ketones?
Write chemical test to distinguish between the following compounds:
Phenol and Benzoic acid
What is the composition of Fehling's reagent?
The correct set of products obtained in the following reactions:
- \[\ce{RCN ->[reduction]}\]
- \[\ce{RCN ->[(i) CH3MgBr][(ii) H2O]}\]
- \[\ce{RNC ->[hydrolysis]}\]
- \[\ce{RNH2 ->[HNO2]}\]
Choose the reaction which is not possible:
In Tollen's test for aldehyde, the overall number of electrons(s) transferred to the Tollen's reagent formula \[\ce{[Ag(NH3)2]+}\] per aldehyde group to form silver mirror is ______. (Round off to the nearest integer)
The reagent that can be used to distinguish acetophenone and benzophenone is ______.
Benzaldehyde is obtained from Rosenmund’s reduction of:
