Concept explainers
Interpretation:
The complete IUPAC name of the given molecule is to be written.
Concept introduction:
When assigning priorities to substituents, the atom having the greater
If substituents are attached by the same atom, the tiebreaker is applied.
For each substituent, the set of three atoms one bond away from its point of attachment is to be identified.
In each set, arrange the three atoms from the highest to the lowest priority. Compare each set’s highest-priority atom.
If they are different, then the atom that has the higher priority corresponds to the higher-priority substituent.
If the highest-priority atoms from each set are identical, then compare each set’s second highest priority corresponding to the higher priority substituent. If the second-highest-priority atoms from each set are identical, then compare each set’s lowest-priority atom to break the tie.
When the fourth priority substituent is pointing away (it is attached by a dash bond) and the first, second, and third priority substituents are arranged clockwise, the configuration is R.
When the fourth priority substituent is pointing away (it is attached by a dash bond) and the first, second, and third priority substituents are arranged counterclockwise, the configuration is S.
If the fourth priority substituent is attached by a wedge bond, then the clockwise or counterclockwise arrangement of the first, second, and third priority substituents is determined, and that arrangement is reversed before assigning R or S.
If the fourth priority substituent is in the plane of the page, then it is switched with the substituent that points away. Then the clockwise or counterclockwise arrangement of the first, second, and third priority substituents is determined, and that arrangement is reversed before assigning R or S.
When writing the IPUAC name, the R or S designation is written in parenthesis for each asymmetric carbon atom, and hyphens are used to separate those designations from the rest of the IUPAC name.
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Organic Chemistry: Principles And Mechanisms: Study Guide/solutions Manual (second)
- Name the following molecule unambiguously.arrow_forwardWhat is the relationship between the following two molecules? Problem viewing the image. Click Here O They are the same compound. O They are structural isomers. O They are stereoisomers. O They are completely different compound and not isomers O They are isotopes.arrow_forwarddraw without the symbols like CHOarrow_forward
- Examine the cycloalkane above. There are two carbons that make up the front of the ring, and three carbons that make up the back of the ring. Now, if you take the above compound, and place a METHYL group on the carbon in the frontmost right position of the ring, you will have a cycloalkane with three groups, all on different neighboring carbons. The correct complete IUPAC name for this NEW compound would be (including numbers when required): cyclopentanearrow_forwardPlease helparrow_forwardExplain Please, I need help!arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning