Phthalimide Reaction

Q. Which one of the following on reduction with LiAlH₄ yields a secondary amine?

1. Methyl isocyanide
2. Acetamide
3. Methyl cyanide
4. Nitroethane
   

Q. Why (CH₃)₃CCH₃Cl does not follow SN² mechanism ?

Q. Choose the amide which on reduction with $LiAl{H}_4$ yields a secondary amine

1. Ethanamide
2. N-methyl ehtanamide
3. N, N-Di methyl ethanamide
4. Phenyl methan amide

Q. Which of the following process do not yield alcohols?

1. Acid catalysed hydration of alkenes
2. Hydroboration-oxidation of alkenes
3. Reduction of aldehydes
4. Free radical halogenation of alkanes

Q. assertion:-in the presence of NaBH4 CH2=CH-CHO is reduced to give CH3-CH2-CH2OH reason:-NaBH4 reduces conjugated double bonds lso

Q. $C_3{H}_8+C{l}_2\stackrel{Light}{\to }{C}_3{H}_{7}Cl+HCl$ is an example of which of the following types of reactions ?

1. Substitution
2. Elimination
3. Addition
4. Rearrangement

Q. N-ethylphthalimide on hydrolysis gives-

1. Ethyl amine
2. Diethyl amine
3. Dimethyl amine
4. Methyl alcohol

Q. basic strength order with proper explanation.als tell why there is solvation effect in 2. 1. aniline 2. 2, 6-dimethyl-aniline 3. 1, 1-dimethyl aniline 4. 2, 6, 1, 1-dimethyl aniline

Q. Which of the following amines can be prepared by the Gabriel phthalimide reaction?

1. n–butylamine
2. neo–pentylamine
3. t–butylamine
4. triethylamine

Q. Gabriel phthalimide synthesis is used in preparation of:

1. $1^o$ Amine
2. $2^o$ Amine
3. $3^o$ Amine
4. All of the above

Q.

Which of the following amine will form stable diazonium salt at 273-283 K ?

1. C₆H₅N(CH₃)₂

2. C₆H₅NH₂

3. C₂H₅NH₂

4. C₆H₅CH₂NH₂

Q.

Account for the following:

(i) pK_b of aniline is more than that of methylamine.

(ii) Ethylamine is soluble in water whereas aniline is not.

(iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

(iv) Although amino group is o, p− directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.

(v) Aniline does not undergo Friedel-Crafts reaction.

(vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines.

(vii) Gabriel phthalimide synthesis is preferred for synthesising primary amines.

Q. Which of the following processes do not yield alcohols?

1. Acid catalysed hydration of alkenes
2. Hydroboration-oxidation of alkenes
3. Reduction of aldehydes
4. Free radical halogenation of alkanes

Q. Which of the following amines cannot be prepared by Gabriel phthalimide reaction?

1. 
2. 
3. 
4. 

Q.

Ethyl amine undergoes oxidation in the presence of to form

[CPMT 1985]

1. An acid

2. An alcohol

3. An aldehyde

4. A nitrogen oxide

Q. Complete the following chemical reaction :

'A' is

1. p-Dimethyl amine azobenzene
2. 2-Phenylazo-4-methyl phenol
3. 4-Amino-3-phenyl azophenol
4. p-Hydroxy axobenzene

Q. Which compound reacts with propene to form tripropyl borane?

1. Beryllium chloride
2. Diborane
3. Boric acid
4. Sodium borohydride

Q. In which of the following reactions correct product is given?

1. 
2. 
3. 
4. 

Q. Major product obtained in the following reaction is:

1. 
2. 
3. 
4. 

Q. Which of the following amines can be prepared by the Gabriel phthalimide reaction?

1. t–butylamine
2. n–butylamine
3. neo–pentylamine
4. triethylamine

Q. Complete the following chemical reaction:
$C_2{H}_5{NH}_2+{CS}_2+Hg{Cl}_2\underset{}{\overset{heat}{\to }}....+HgS+HCl$

Q. The end product of the reaction :$C_2{H}_{5}N{H}_2\stackrel{HONO}{\to }A\stackrel{PC{l}_5}{\to }B\stackrel{N{H}_3}{\to }$ is:

1. Ethyl cyanide
2. Acetamide
3. Methyl amine
4. Ethyl amine

Q. The total number of amines among the following which can be synthesised by Gabriel synthesis is _______.
(a)
(b) $C{H}_{3}C{H}_{2}N{H}_2$

(c)

(d)


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Q. The major product formed in the following reaction is-

1. $C{H}_{3}OC{H}_3$
2. $C{H}_{3}C{H}_{2}OC{H}_3$
3. $C{H}_{3}C{H}_{2}OC{H}_{2}Br$
4. $C{H}_{3}C{H}_{2}C{H}_{2}OH$

Q. How many of the following amines can be prepared by Gabriel phthalimide synthesis?

$C{H}_{3}C{H}_{2}N{H}_2$

1. 1
2. 2

3. 3

4. 4

Q. For the following reaction:
$R-OH+HX\to R-X+H_{2}O$
The reaction will be fastest when $HX$ is:

1. $HI$
2. $HBr$
3. $HCl$
4. None of the above

Q. Assertion :The amide, N-methyl acetamide does not undergo Hofmann's bromamide degradation with $B{r}_2/NaOH$. Reason: It cannot form the required sodium salt of N-bromamide in the intermediate step of reaction.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q.
The major product of the above reaction is:

1. 
2. 
3. 
4. 

Q. Which of the following halids cannot be hydrolysed ? (i)TeF6 (ii) SF6 (iii) NCl3 (iv) NF3 Choose the correct code 1) iii and iv 2) i , ii, and iii 3)i , ii and iv 4) ii , iv

Q. Which of the following statment regarding D is correct?

1. It is a conjugated dience
2. It has three methyl groups
3. D on heating with conc.$H_{2}S{O}_4$ will isomerizes into a conjugated diene
4. D on treatment with HBr/RooR produces a pair enantiomers