NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322939
Assertion : Di-tert-butyl ether cannot be prepared by Williamson's synthesis. Reason : tert-Butyl bromide on treatment with sodium tert-butoxide preferentially undergoes elimination to form isobutylene and tert-butyl alcohol.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Di-tert-butyl ether (DTBE) cannot be synthesized via Williamson's synthesis due to steric hindrance from bulky tert-butyl groups, hindering effective nucleophilic attack by the alkoxide ion on tert-butyl halide. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322940
Among the following sets of reactants which one produces anisole?
Phenols react with alkylhalides in alkaline medium to form ethers. Therefore,
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322941
Statement A : ter - Butyl methyl ether is not prepared by the reaction of ter - butyl bromide with sodium methoxide. Statement B : Sodium methoxide is a strong nucleophile.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Statement A is true because ter-butyl methylether is not typically prepared by the reaction of ter-butyl bromide with sodium methoxide. During the above reaction, isobutene is formed as a major product. Statement B is also true as sodium methoxide is indeed a strong nucleophile.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322942
The reaction which can be described as
1 Acid-base reaction followed by intramolecular \(\mathrm{S}_{\mathrm{N}}{ }^{1}\) reaction
2 Acid-base reaction followed by an intramolecular williamson ether synthesis
3 \(\mathrm{E}_{2}\) reaction followed by an addition reaction to a double bond
4 \(\mathrm{S}_{\mathrm{N}}^{2}\) reaction following an intramolecular williamson ether synthesis
322939
Assertion : Di-tert-butyl ether cannot be prepared by Williamson's synthesis. Reason : tert-Butyl bromide on treatment with sodium tert-butoxide preferentially undergoes elimination to form isobutylene and tert-butyl alcohol.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Di-tert-butyl ether (DTBE) cannot be synthesized via Williamson's synthesis due to steric hindrance from bulky tert-butyl groups, hindering effective nucleophilic attack by the alkoxide ion on tert-butyl halide. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322940
Among the following sets of reactants which one produces anisole?
Phenols react with alkylhalides in alkaline medium to form ethers. Therefore,
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322941
Statement A : ter - Butyl methyl ether is not prepared by the reaction of ter - butyl bromide with sodium methoxide. Statement B : Sodium methoxide is a strong nucleophile.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Statement A is true because ter-butyl methylether is not typically prepared by the reaction of ter-butyl bromide with sodium methoxide. During the above reaction, isobutene is formed as a major product. Statement B is also true as sodium methoxide is indeed a strong nucleophile.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322942
The reaction which can be described as
1 Acid-base reaction followed by intramolecular \(\mathrm{S}_{\mathrm{N}}{ }^{1}\) reaction
2 Acid-base reaction followed by an intramolecular williamson ether synthesis
3 \(\mathrm{E}_{2}\) reaction followed by an addition reaction to a double bond
4 \(\mathrm{S}_{\mathrm{N}}^{2}\) reaction following an intramolecular williamson ether synthesis
322939
Assertion : Di-tert-butyl ether cannot be prepared by Williamson's synthesis. Reason : tert-Butyl bromide on treatment with sodium tert-butoxide preferentially undergoes elimination to form isobutylene and tert-butyl alcohol.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Di-tert-butyl ether (DTBE) cannot be synthesized via Williamson's synthesis due to steric hindrance from bulky tert-butyl groups, hindering effective nucleophilic attack by the alkoxide ion on tert-butyl halide. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322940
Among the following sets of reactants which one produces anisole?
Phenols react with alkylhalides in alkaline medium to form ethers. Therefore,
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322941
Statement A : ter - Butyl methyl ether is not prepared by the reaction of ter - butyl bromide with sodium methoxide. Statement B : Sodium methoxide is a strong nucleophile.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Statement A is true because ter-butyl methylether is not typically prepared by the reaction of ter-butyl bromide with sodium methoxide. During the above reaction, isobutene is formed as a major product. Statement B is also true as sodium methoxide is indeed a strong nucleophile.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322942
The reaction which can be described as
1 Acid-base reaction followed by intramolecular \(\mathrm{S}_{\mathrm{N}}{ }^{1}\) reaction
2 Acid-base reaction followed by an intramolecular williamson ether synthesis
3 \(\mathrm{E}_{2}\) reaction followed by an addition reaction to a double bond
4 \(\mathrm{S}_{\mathrm{N}}^{2}\) reaction following an intramolecular williamson ether synthesis
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322939
Assertion : Di-tert-butyl ether cannot be prepared by Williamson's synthesis. Reason : tert-Butyl bromide on treatment with sodium tert-butoxide preferentially undergoes elimination to form isobutylene and tert-butyl alcohol.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Di-tert-butyl ether (DTBE) cannot be synthesized via Williamson's synthesis due to steric hindrance from bulky tert-butyl groups, hindering effective nucleophilic attack by the alkoxide ion on tert-butyl halide. So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322940
Among the following sets of reactants which one produces anisole?
Phenols react with alkylhalides in alkaline medium to form ethers. Therefore,
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322941
Statement A : ter - Butyl methyl ether is not prepared by the reaction of ter - butyl bromide with sodium methoxide. Statement B : Sodium methoxide is a strong nucleophile.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both statements are incorrect.
Explanation:
Statement A is true because ter-butyl methylether is not typically prepared by the reaction of ter-butyl bromide with sodium methoxide. During the above reaction, isobutene is formed as a major product. Statement B is also true as sodium methoxide is indeed a strong nucleophile.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
322942
The reaction which can be described as
1 Acid-base reaction followed by intramolecular \(\mathrm{S}_{\mathrm{N}}{ }^{1}\) reaction
2 Acid-base reaction followed by an intramolecular williamson ether synthesis
3 \(\mathrm{E}_{2}\) reaction followed by an addition reaction to a double bond
4 \(\mathrm{S}_{\mathrm{N}}^{2}\) reaction following an intramolecular williamson ether synthesis
