What stereochemistry do you expect for the alkene obtained by e2 elimination of (1r,2r)-1,2-dibromo-1,2-diphenyleth ane? draw a newman projection of the reacting conformation.

Z-isomer of the alkene is formed.

Explanation:

E2 elimination occurs in the presence of a strong base. It is a bimolecular elimination reaction in which the rate depends both on the concentration of the alkyl halide and the base.

The elimination reaction occurs in a single step. For E2 to happen, Hydrogen at the α-C and the halogen must be anti periplanar to each other or the angle between them is equals to 180°.

The reaction of (1R,2R) -1,2-dibromo-1,2-diphenylethane with a strong base gives (Z)-1-bromo-1,2-diphenylethene. The mechanism is shown in image one. Z-isomer of the alkene is formed.

The Newman projection of the reacting conformation is shown in image 2.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

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explanation: