Question

Answer the question on the basis of the passage given below: 
Alcohols and phenol are formed when a hydrogen atom in a hydrocarbon, aliphatic and aromatic respectively, is replaced by \(-OH\). The substitution of a hydrogen atom in a hydrocarbon by an alkoxy or aryloxy group forms ethers. 
Alcohols and phenol consist of two parts, an alkyl/aryl group and a hydroxyl group. The properties of alcohols and phenols are primarily due to the hydroxyl group. The nature of alkyl and aryl groups simply modify these properties. Alcohol react both as nucleophiles and electrophiles whereas in phenols, the reactions that take place on the aromatic ring are electrophilic substitution reactions. 
The IUPAC name of the following compound is: 

• A. 2-Methyl-2-phenyl ethanol
• B. 1-Methyl-1-phenyl ethanol
• C. 2-Phenylpropan-2-ol
• D. 1,1-Dimethyl-1-phenyl methanol

Hint:

The compound described here is a substituted alcohol, where the methyl group is attached to the carbon chain, leading to a common IUPAC nomenclature used for alcohols. Always observe the position of the hydroxyl group when naming alcohols in the IUPAC system.

Answer 1

The Correct Option is A

The given compound has a methyl group at position 2 on the phenol ring, and a hydroxyl group (OH) and another methyl group at position 2 of the ethyl chain attached to the phenol ring. Hence, the IUPAC name for the compound is 2-Methyl-2-phenyl ethanol. The chemical reaction that might represent the preparation of this compound is the nucleophilic substitution of the halide in the presence of an alcohol group: \[ \text{Bromobenzene (C}_6\text{H}_5\text{Br)} + \text{CH}_3\text{OH} \rightarrow \text{2-Methyl-2-phenyl ethanol} \] This reaction represents the formation of a substituted alcohol from a substituted halide (bromobenzene) via nucleophilic substitution.