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#1 2010-01-22 02:39:18

orgopete
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Bromination of trans-2-butene to give meso dibromide

Yahoo!Answers in chemistry wrote:

You conduct a bromination reaction of the alkene compound 2-butene in nonnucleophilic solvent and form a meso product. Draw the starting compound with the correct stereochemistry and draw the product illustrating the fact that it is a meso compound.

The addition of bromine to an alkene is an anti-addition. From 2-butene, the bromine atoms are on opposite sides. If the bond is rotated 180, then the groups eclipse, see equivalent Fischer projection.


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