Nucleophile in the mechanism of Lithium aluminum hydride reduction of phenyletha

Question

Nucleophile in the mechanism of Lithium aluminum hydride reduction of phenylethanoic acid is: (A) lithium ion (B) hydrogen ion (C) carboxylic acid carbon (D) aluminum ion (E) hydride ion Major product in the reaction of benzene with 1 bromopropane, in the presence of AIBr_3 catalyst (A) bromobenzene (B) n-propylbenzene (C) iso- propylbenzene (D) o-bromo-n-propylbenzene (E) P-bromo-n-propylbenzene Which of the following diene is a conjugated diene? (A) 2-methyl, 1,5-hexadiene (B) 2,5-hexadiene (C) 1-methyl,cyclohexa-1,4-diene (D) cyclohexa-1,4-diene (E) 2-methyl, 2,4-hexadiene Major product in the reaction of benzaldehyde with CI_2/FeCl_3 (A) p-chlorobenzaldehyde (B) o-chlorobenzaldehyde (C) m-chlorobenzaldehyde (D) chlorobenzene (E) phenol Which of the following reagent(s) can be used to convert nitrozene to m-nitrobenzenesulfonic acid (A) H_2SO_3 (B) SO_3/Fe (C) H_2SO_3/Fe (D) H_2SO_4/Al_2(SO_4)_3 (E) H_2SO_4SO_3 The aromatic compound is Which of the following reagent(s) gives the reaction below Which of the following reagent(s) can be used to prepare 2-methyl 1,2-butanol from acetone? (A) C_2H_5MGBr (B) C_2H_5MgBr/H_3O^+ (C0 NaBH_4/H_3O^+ (D) n-C_3H_7MgBr/H_3O^+ (E) PCC Which of the following reactant(s) gives the reaction below

Explanation / Answer

Answer-

16) Hydride ion acts as a nucleophile.

17) The major product is n-propylbenzene.

18) 2-methyl-2,4-hexadiene is a conjugate diene.

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