Concept explainers
(a)
Interpretation: The cis and trans isomers of the given structure B. The stereochemical relation between them needs to be determined. The R or S configuration needs to be assigned to the stereocenters at the ring fusion.
Concept Introduction:When four groups are attached to single atom that atom is called chiral atom and rotation about that atom is called the configuration.
(b)
Interpretation: The cis form of the compound and the stereochemistry at carbon 3 and 6 needs to be determined.
Concept Introduction:when an atom has four different groups that atom is called the chiral atom and rotation about chiral atom gives the configuration of the molecule.
(c)
Interpretation: The cis configuration and configuration at C,C4a,C6, and C8a needs to be determined.
Concept Introduction:Configuration tells us about the rotation of the molecule about the chiral atom. Clockwise rotation represents the R whereas anticlockwise represents the S configuration.
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Organic Chemistry: Structure and Function
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