Interpretation:
The structure(s) with which the absolute configuration of
Concept introduction:
An absolute configuration is the three-dimensional spatial arrangement of atoms or groups at the chirality center.
The absolute configuration at the chiral center is assigned on the basis of Cahn-Ingold-Prelog rules. The Cahn-Ingold-Prelog system ranks substituents at the chirality center in the order of decreasing
If this path is clockwise, the absolute configuration is R. If this path is counterclockwise, the absolute configuration is S.
In Fischer projections, the molecule is oriented so that the two vertical bonds at the chirality center are directed away from the viewer and the two horizontal bonds point toward the viewer.
When the connection between absolute configuration and sign of rotation is known, it is a common practice to incorporate both in the name of the compound.
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Chapter 4 Solutions
ORGANIC CHEMISTRY VOL 2
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- Give the structure of a dimethylcyclobutane that is chiralarrow_forwardQuestion: What is the theoretical explanation for the phenomenon of chirality in organic chemistry, and how does it relate to the physical properties and reactivity of chiral molecules?arrow_forwardExplain why compounds of Zn2+ are white, but compounds ofCu2+ are often blue or green?arrow_forward
- A) How many stereocentres are present in the molecule? B) Is the molecule chiral? Does it contain planes of symmetry? Briefly explain using the evidence for your answer. C) Are the models you have just built enantiomers?arrow_forwardup an example (not appearing in this ChemActivity) of a pair of molecules that are a)constitutional isomers, b) conformers. c) configurational stereoisomers.arrow_forwardExplain with proper description with examples: difference between regioselectivity and stereoselectivityarrow_forward
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