Mention the reagents used for the following conversions: (m) C 6 H 5 CH 3 → A C 6 H 5 CHO (n) CH 3 CHO → B CH 3 COOC 2 H 5 (o) C 6 H 5 CHO → C C 6 H 5 COCH OH C 6 H 5 (p) CH 3 COCH 3 → D CH 3 2 C OH CH 2 COCH 3 (q) CH 3 CH 2 COOH → E CH 3 CH Br COOH (r) CH 3 COCH 3 → F CH 3 COCH 2 Br

(m) Side chain chlorination of toluene gives benzal chloride, which on hydrolysis gives benzaldehyde. C 6 H 5 CH 3 → H 2 O , 373 K Cl 2 / hν C 6 H 5 CHO (n) All aldehydes in presence of aluminium ethoxide, undergo simultaneous oxidationand reduction to form an ester. CH 3 CHO → Al OC 2 H 5 3 CH 3 COOC 2 H 5 (o) Benzaldehyde reacts with alcoholic potassium cyanide to give benzoin. C 6 H 5 CHO → alc . KCN C 6 H 5 COCH OH C 6 H 5 (p) Aldehydes and ketones having at least one α-hydrogen undergo a reaction in the presence of dilute alkali as catalyst to form β -hydroxy aldehydes (aldol) or β -hydroxy ketones (ketol), respectively. CH 3 COCH 3 → Ba OH 2 CH 3 2 C OH CH 2 COCH 3 (q) Carboxylic acids having an α -hydrogen are halogenated at the α -position on treatment with chlorine or bromine in the presence of small amount of red phosphorus to give α -halocarboxylic acids. CH 3 CH 2 COOH → H 2 O X 2 / Red P CH 3 CH Br COOH (r) Acetone reacts with bromine in presence of UV light gives bromoacetone. CH 3 COCH 3 → Br 2 / Uv light CH 3 COCH 2 Br

H 3 C CO C 2 H 5 + C H 3 C O O C 2 H 5 → C 2 H 5 O N a / H 3 O + P M a j o r

P When reacted with C - 2 H 5 O D + C 2 H 5 O N a , all the hydrogens will be replaced by deuterium.

P Predominantly exists in enolic from

P Predominantly exists in keto form.

P will give coloured precipitate with neutral F e C l 3 but will not give test with 2,4-DNP

In the context of the rearrangement of an oxime of a ketone to an amide (represented below) Which of the following statement is/are correct?

The group that migrates never gets completely detached from the remainder of the molecule during the transformation

It is the cis hydrocarbon radical ( R ) with respect to the OH group that migrates

The rearrangement is intermolecular

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What is Claisen condensation reaction?

Important Questions on Carbonyl Compounds and Carboxylic Acids

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Acetic anhydride reacts with diethyl ether in the presence of anhydrous

{AlCl}_{3}

to give

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

The major product of the following reaction is:

Question Image

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Explain the use of radioactive isotopes in the study of the mechanism of photosynthesis in plants and the hydrolysis of esters.

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Which of following elements does not form amide when reacted with ammonia?

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Explain the mechanism of the Claisen Schmidt reaction.

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Which is the main organic product obtained by the reaction of

2, 2, 2

trichloro ethanal with calcium hydroxide?

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Give suitable reaction to show that trans esterification is an alcoholysis reaction.

EASY

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Mention the reagents used for the following conversions:

(m) $C_{6} H_{5} {CH}_{3} \overset{A}{\to} C_{6} H_{5} CHO$

(n) ${CH}_{3} CHO \overset{B}{\to} {CH}_{3} {COOC}_{2} H_{5}$

(o) $C_{6} H_{5} CHO \overset{C}{\to} C_{6} H_{5} COCH (OH) C_{6} H_{5}$

(p) ${CH}_{3} {COCH}_{3} \overset{D}{\to} {({CH}_{3})}_{2} C (OH) {CH}_{2} {COCH}_{3}$

(q) ${CH}_{3} {CH}_{2} COOH \overset{E}{\to} {CH}_{3} CH (Br) COOH$

(r) ${CH}_{3} {COCH}_{3} \overset{F}{\to} {CH}_{3} {COCH}_{2} Br$

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Reaction of benzaldehyde with acetic anhydride in the presence of base is known as _____ and the product

EASY

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Write chemical equations to illustrate the following name reactions: Benzoin condensation.

EASY

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Which compound does not give Benedict test?

EASY

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Benedict's solution is not reduced by

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

H_{3} C CO C_{2} H_{5} + C H_{3} C O O C_{2} H_{5} \overset{C_{2} H_{5} O N a / H_{3} O^{+}}{\to} (P) M a j o r

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Product is

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

A keto ester

(A)

with molecular formula

C_{6} H_{10} O_{3}

on treatment with

N a O H + I_{2}

does not give iodoform but on boiling with dilute KOH gives a compound

(B)

with molecular formula

C_{4} H_{5} O_{3} K

which upon acidification followed by heating undergoes decarboxylation to give acetone. The keto ester

(A)

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Claisen condensation is not given by

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Which of the following reactions can be used to change benzaldehyde and acetic anhydride to cinnamic acid?

MEDIUM

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

In the context of the rearrangement of an oxime of a ketone to an amide (represented below)

Question Image

Which of the following statement is/are correct?

HARD

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Conversion of benzaldehyde to 3-phenylprop-2-en-1-oic acid is

EASY

Chemistry>Organic Chemistry>Carbonyl Compounds and Carboxylic Acids>Functional Derivatives of Carboxylic Acids

Which of the following does not undergo benzoin condensation?

What is Claisen condensation reaction?

Important Questions on Carbonyl Compounds and Carboxylic Acids

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