Question

Show the possible products for each reaction: a) Br2 in DCM & b) NBS in water + DMSO. ASsign stereochem in the product(s). If more than one product, describe their relationship. CHз CHaCH-CH3DCCH,CHа

chap 8 test prep

Answer 1

Addition of bromine.

Reactions : 0 Alkenes are react with Brol Dem to form di bromo Alkanes . This is anti addition of Bre takes place via cyclic brominium ion intermediate. осм y - CH₂ CH₂ -CH=C-CH₂ - CH₂ + Bra el? си, сн; сн CH -C-CH2CH3 B7 B7 ... -1 Alkenes having allyl hydrogen react- with NBS CN-Bromo succénawide) to form allyl bromide derivatives. . . CH3 CH3 -CH2 -CH=C -CH-CH2 + NBS – 2 3: water Disol CH3 CH3-CH 2 -CH=CH2CH. to produd - *