(Z)-But-2-ene is (i) treated with cold dilute alkaline KMnO4 to give the diol P, and (ii) treated with Br2 in CCl4 to gi

Question

(Z)-But-2-ene is (i) treated with cold dilute alkaline KMnO4 to give the diol P, and (ii) treated with Br2 in CCl4 to give the dibromide Q. Which pair is correct?

Accepted Answer

P is meso-butane-2,3-diol and Q is a racemic mixture of (2R,3R)- and (2S,3S)-2,3-dibromobutane

Answer

P is racemic butane-2,3-diol and Q is meso-2,3-dibromobutane

Answer

P is meso-butane-2,3-diol and Q is meso-2,3-dibromobutane

Answer

P is racemic butane-2,3-diol and Q is a racemic mixture of 2,3-dibromobutane

(Z)-But-2-ene is (i) treated with cold dilute alkaline $KMnO X_{4}$ to give the diol P, and (ii) treated with $Br X_{2}$ in $CCl X_{4}$ to give the dibromide Q. Which pair is correct?

Answer: C

More questions on Alkenes: preparation and addition reactions

(Z)-But-2-ene is (i) treated with cold dilute alkaline KMnOX4​ to give the diol P, and (ii) treated with BrX2​ in CClX4​ to give the dibromide Q. Which pair is correct?

Answer: C

More questions on Alkenes: preparation and addition reactions

(Z)-But-2-ene is (i) treated with cold dilute alkaline $KMnO X_{4}$ to give the diol P, and (ii) treated with $Br X_{2}$ in $CCl X_{4}$ to give the dibromide Q. Which pair is correct?