JEE Main levelSingle correct optionDifficulty 2 of 3hx175
Lithium dimethylcuprate, (CHX3)X2CuLi, reacts with benzyl bromide, CX6HX5CHX2Br. The organic product is
Atoluene
Bethylbenzene
Cpropylbenzene
D1,2-diphenylethane
Answer: B
Gilman reagents RX2CuLi (from 2 RLi + CuI) couple one alkyl group with an organic halide, R−RX′. Here CHX3 replaces Br: CX6HX5CHX2−CHX3, ethylbenzene.