Question

C) Draw all of the different meso-products that can form from B) above. In order to be different they must have different names.

A) What functionality is produced when an alkene reacts with molecular bromine (Br2) in the cold and dark? vicinal dibromide O geminal dibromide O tertiary bromide O vicinal bromohydrin B) Select all of the alkenes below which will result in a meso-form when the indicated alkene reacts with molecular bromine (Br2) in the cold and dark. trans-3-hexene cis-2-hexene trans-2-hexene cis-3-hexene 1-hexene C) Draw all of the different meso-products that can form from B) above. In order to be different they must have different names.

Answer 1

A)

Vicinal dibromide is produced when bromine molecule adds to C=C double bond of an alkene in cold and dark.
A vicinal dibromide has 2 bromine atoms on adjacent C atoms.
A geminal dibromide has 2 bromine atoms on same C atom.
A vicinal bromohydrin has a bromine atom and a hydroxyl group on adjacent C atoms.

B)

trans-3-hexene gives meso products.

The remaining gives racemic mixture.

1-hexene gives prodcut containing only chiral C atom. The product is a racemic mixture.

C)

Only one meso product is possible.