Preparation, properties and reactions
- The given compoundC_6H_5-CH=CH-CH(X)-CH_2CH_3 (benzene ring attached to CH=CH-CH(X)-CH_2CH_3)is an example of ________. Answer: 4. allylic halide Key idea: A halide is named by the carbon that carries the halogen. In C₆H₅-CH=CH-CH(X)-CH₂CH₃ , X is on an sp³ ca... 1
- Identify compound X in the following sequence of reactions :Toluene (C_6H_5CH_3) Cl_2/h X [373\ K]H_2O Benzaldehyde (C_6H_5CHO) Answer: 3. Benzal chloride (C ₆ H ₅ CHCl ₂ ) Free-radical chlorination of the side chain ( Cl₂/hν ) replaces methyl hydrogens. To get an ald... 1
- Identify A and predict the type of reaction. [Reactant: 3-bromoanisole (benzene ring with OCH3 and Br meta to each other) with NaNH2 gives A] Answer: 4. [structure: 3-aminoanisole (OCH3 and NH2 meta)] and substitution reaction Key idea: aryl halide with NaNH₂ reacts through a benzy... 1
- Which of the following compounds shall not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? Answer: 2. H₂C=C=O Key idea: propene forms from a three-carbon alcohol or halide by elimination (or from cyclopropane by HBr ring opening to... 1