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An organic compound X' With molecular formula, $ C_7H_8O is insoluble in aqueous NaHCO_3 but dissolves in NaOH . When treated with bromine water, `X' rapidly gives `Y' (C_7H_5OBr_3 )$ . The compounds X' and `Y' respectively, are
Willamson's Synthesis is used for the preparation of
Williamson's synthesis is a well-known method for the preparation of ethers. It involves the reaction of an alkoxide ion with a primary alkyl halide or tosylate in an SN2 reaction mechanism. This method is widely used in organic chemistry to form symmetrical and asymmetrical ethers.
Phenols are more acidic than alcohols because
Phenols are more acidic than alcohols because the phenoxide ion formed after losing a hydrogen ion (H+) is stabilized by resonance. The negative charge on the oxygen atom is delocalized over the aromatic ring, which makes the phenoxide ion more stable. On the other hand, the alkoxide ion formed from alcohols does not have such resonance stabilization, making alcohols less acidic.
The products obtained when benzyl phenyl ether is heated with HI in the mole ratio 1:1 are 1. phenol, 2 benzyl alcohol, 3. benzyl iodide, 4. iodobenzenc
When benzyl phenyl ether is heated with HI, it undergoes cleavage to form phenol and benzyl iodide. The reaction proceeds as follows: C6H5CH2O-C6H5 + HI → C6H5OH + C6H5CH2I. Therefore, the products obtained are phenol (option 1) and benzyl iodide (option 3).
Which one of the following is reduced with zinc and hydrochloric to give the cor responding hydrocarbon?
An organic compound x with molecular formula $ C_5H_{10}O $ yields phenyl hydrazone and gives a negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. The compound could be.
The organic compound X with molecular formula $C_5H_{10}O$ is described as yielding phenyl hydrazone and giving a negative response to both the iodoform test and Tollen's test. This means that it is not a methyl ketone or an aldehyde, as these would give positive results with iodoform and Tollen's tests, respectively. Additionally, the compound produces n-pentane on reduction, indicating that the keto group is in the middle of the chain. Therefore, the compound is most likely pentan-3-one.
Which of the following on heating with aqueous KOH, produces acetaldehyde ?
When $CH_3CHCl_2$ (1,1-dichloroethane) is heated with aqueous KOH, it undergoes a hydrolysis reaction to form acetaldehyde ($CH_3CHO$). The reaction proceeds through the formation of a geminal diol intermediate, which then loses water to form the aldehyde.
The formation of cyanohydrin from a ketone is an example of
The formation of cyanohydrin from a ketone is an example of nucleophilic addition. In this reaction, the nucleophile (cyanide ion, $CN^-$) attacks the electrophilic carbonyl carbon of the ketone, forming a new carbon-carbon bond and resulting in the formation of cyanohydrin.
C-O-C angle would be maximum in
The C-O-C bond angle is influenced by steric hindrance around the oxygen atom. In the case of $ (CH_3)_2 CH - O - CH (CH_3)_2 $, the two bulky isopropyl groups will create more steric repulsion, causing the bond angle to increase to minimize this repulsion. Therefore, the C-O-C bond angle will be maximum in $ (CH_3)_2 CH - O - CH (CH_3)_2 $.
Which of the following reactions does not yield an ether ?
The reaction between sodium ethoxide and bromocyclopropane does not yield an ether. This is because bromocyclopropane undergoes a nucleophilic substitution reaction where the strain in the three-membered ring leads to the formation of a ring-opened product rather than an ether.
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