Chiral carbon atoms present in nepetalactone has to be labelled. The number of possible stereoisomers for nepetalactone has to be given and to show that nepetalactone is a terpene. Concept Introduction: Terpenes are made by joining five-carbon units, usually in a head to tail-fashion. Isoprene unit: Branched end of isoprene – Head Unbranched end of isoprene - Tail Chirality: It refers to a Carbon atom in a molecule that contains four different substituents. Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers. Number of possible stereoisomers for a compound can be determined as, No of possible stereoisomers = 2 n where, n = no . of chiral atoms in the compound

Question

Complete the reaction in the drawing area below by adding the major products to the right-hand side. If there won't be any products, because nothing will happen under these reaction conditions, check the box under the drawing area instead. Note: if the products contain one or more pairs of enantiomers, don't worry about drawing each enantiomer with dash and wedge bonds. Just draw one molecule to represent each pair of enantiomers, using line bonds at the chiral center. More... No reaction. my ㄖˋ + 1. Na O Me Click and drag to start drawing a structure. 2. H +

Answer 1

Question

Chapter 5, Problem 5.36P

Interpretation Introduction

Interpretation:

Chiral carbon atoms present in nepetalactone has to be labelled. The number of possible stereoisomers for nepetalactone has to be given and to show that nepetalactone is a terpene.

Concept Introduction:

Terpenes are made by joining five-carbon units, usually in a head to tail-fashion.

Isoprene unit:

Branched end of isoprene – Head

Unbranched end of isoprene - Tail

Chirality: It refers to a Carbon atom in a molecule that contains four different substituents.

Stereoisomers: Two compounds with same molecular formula but different in their orientation are considered as isomers.

Number of possible stereoisomers for a compound can be determined as,

No of possible stereoisomers = 2nwhere,n = no. of chiral atoms in the compound

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