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Q.8.

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Organic Chemistry
Found in: Page 390

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Short Answer

Question: Draw the structure corresponding to each IUPAC name.

a. (Z)-4-ethylhept-3-ene

b. (E)-3,5,6-trimethyloct-2-ene

c. (Z)-2-bromo-1-iodohex-1-ene

Answer

See the step by step solution

Step by Step Solution

Step 1: Detect the parent carbon chain

Determine the parent carbon chain from the parent name and assign groups as per the numbering.

Step 2: Alkenes

Alkenes are numbered such that the double bonds get the lowest values, followed by the groups attached.

Step 3: Drawing the structures of the given compounds

The alkyl groups are placed around the C=C bonds as per E and Z names.

a. The parent name “hept” indicates that the parent chain consists of seven carbon atoms. The Z isomer has the higher priority groups on the same side of C=C.

Structure of a

b. The parent name “oct” indicates that the parent chain consists of eight carbon atoms. The E isomer has higher priority groups on the opposite sides of C=C.

Structure of b

c. The parent name “hex” indicates that the parent chain consists of six carbon atoms. The Z isomer has higher priority groups on the same side of C=C.

Structure of c

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