Question

Draw the structural formula of (E)-1,2-dibromo-3-isopropyl-2-hexene. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default.

Answer 1

The structural formula of (E)-1,2-dibromo-3-isopropyl-2-hexene includes a six-carbon chain with a trans double bond between the second and third carbons, bromine atoms on the first and second carbons, and an isopropyl group on the third carbon.

Step-by-step explanation:

The structural formula of (E)-1,2-dibromo-3-isopropyl-2-hexene can be drawn by starting with the six-carbon parent chain that includes a double bond between the second and third carbons. (E)- or entgegen indicates that the higher priority groups on the double-bonded carbons are on opposite sides.

Since bromine has a higher priority according to the Cahn-Ingold-Prelog rules, the bromine atoms will be on opposite sides of the carbon chain when looking down the double bond. The 1,2-dibromo indicates bromine atoms attached to the first and second carbons of the chain. The isopropyl group at the third carbon consists of a central carbon bonded to the chain and two additional methyl groups. Each carbon atom not part of the double bond should have sufficient hydrogen atoms to maintain four covalent bonds.