'G' in the above sequence of reaction is
'G' in the above sequence of reaction is
- (CH3)2CHCOOCH2CH3
- CH2CH2CH2COOCH2CH3
- CH3CH2COOCH2CH2CH3
- CH3CH2COOCH(CH3)2
The Correct Option is C
Solution and Explanation
Given reaction sequence:
C6H12O6 → (i) OH−/H2O, Δ → (ii) H3O+ → H + 1 → CrO3/H+
Step-by-step explanation:
Step 1: C6H12O6 → Under basic hydrolysis and heating (OH−/H2O, Δ), glucose undergoes degradation reactions (retro-aldol type cleavages) that break it into smaller fragments such as aldehydes and carboxylic acids.
Step 2: Acidification (H3O+) causes the intermediate products to be protonated, stabilizing them for further reaction.
Step 3: Reaction with CrO3/H+ (oxidation) selectively oxidizes aldehyde groups into carboxylic acids, forming esters when alcohols are also present.
Target Compound G: The expected product is an ester with the structure CH3CH2COOCH2CH2CH3 – this matches with the systematic breakdown of glucose followed by esterification and oxidation steps.
Correct option: (C): CH3CH2COOCH2CH2CH3
Top Questions on Aldehydes, Ketones and Carboxylic Acids
- Complete the following:
1. Reactant: RCOCl
Reagent: H2 / Pd-BaSO4
Major Product: RCHO
Name of Reaction: Rosenmund Reduction
2. Reactant: CH3COOH
Reagent: Cl2 / Red P
Major Product: Cl-CH2COOH
Name of Reaction: HVZ Reaction
3. Reactant: CH3CHO
Reagent: Zn-Hg / conc. HCl
Major Product: CH3CH3
Name of Reaction: Clemmensen Reduction- KBPE - 2026
- Chemistry
- Aldehydes, Ketones and Carboxylic Acids
- Give one chemical test to distinguish between formaldehyde and acetaldehyde.
- KBPE - 2026
- Chemistry
- Aldehydes, Ketones and Carboxylic Acids
(i) Explain Aldol condensation with example.
(ii) How are the following conversions achieved:
(a) Benzene Benzaldehyde, (b) Ethanoic acid ethanol.- KBPE - 2026
- Chemistry
- Aldehydes, Ketones and Carboxylic Acids
- Benzoic acid to Benzene
- CBSE CLASS XII - 2026
- Chemistry
- Aldehydes, Ketones and Carboxylic Acids
- Which of the reactions is used in the conversion of a ketone into hydrocarbon?
- CBSE CLASS XII - 2026
- Chemistry
- Aldehydes, Ketones and Carboxylic Acids
Questions Asked in WBJEE exam
What are the charges stored in the \( 1\,\mu\text{F} \) and \( 2\,\mu\text{F} \) capacitors in the circuit once current becomes steady?
- WBJEE - 2026
- Capacitors and Capacitance
Which one among the following compounds will most readily be dehydrated under acidic condition?
- WBJEE - 2026
- Organic Reactions
Manufacturers supply a zener diode with zener voltage \( V_z=5.6\,\text{V} \) and maximum power dissipation \( P_{\max}=\frac14\,\text{W} \). This zener diode is used in the circuit shown. Calculate the minimum value of the resistance \( R_s \) so that the zener diode will not burn when the input voltage is \( V_{in}=10\,\text{V} \).
- WBJEE - 2026
- Zener Diodes
Two charges \( +q \) and \( -q \) are placed at points \( A \) and \( B \) respectively which are at a distance \( 2L \) apart. \( C \) is the midpoint of \( AB \). The work done in moving a charge \( +Q \) along the semicircle CSD (\( W_1 \)) and along the line CBD (\( W_2 \)) are
- WBJEE - 2026
- electrostatic potential and capacitance
A piece of granite floats at the interface of mercury and water. If the densities of granite, water and mercury are \( \rho, \rho_1, \rho_2 \) respectively, the ratio of volume of granite in water to that in mercury is
- WBJEE - 2026
- Buoyancy and Floatation
Concepts Used:
Aldehydes, Ketones, and Carboxylic Acids
Aldehydes, Ketones, and Carboxylic Acids are carbonyl compounds that contain a carbon-oxygen double bond. These organic compounds are very important in the field of organic chemistry and also have many industrial applications.
Aldehydes:
Aldehydes are organic compounds that have the functional group -CHO.
Preparation of Aldehydes
Acid chlorides are reduced to aldehydes with hydrogen in the presence of palladium catalyst spread on barium sulfate.
Ketones:
Ketones are organic compounds that have the functional group C=O and the structure R-(C=O)-R’.
Preparation of Ketones
Acid chlorides on reaction with dialkyl cadmium produce ketones. Dialkyl cadmium themselves are prepared from Grignard reagents.
Carboxylic Acid:
Carboxylic acids are organic compounds that contain a (C=O)OH group attached to an R group (where R refers to the remaining part of the molecule).
Preparation of Carboxylic Acids
Primary alcohols are readily oxidized to carboxylic acids with common oxidizing agents such as potassium permanganate in neutral acidic or alkaline media or by potassium dichromate and chromium trioxide in acidic media.