Concept explainers
(a)
Interpretation:Each stereocenter in the indicated cyclohexane should be labeled as either R or S.
Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of
The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.
If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.
(b)
Interpretation:Each stereocenter in the indicated cyclohexane should be labeled as either R or S.
Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.
The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.
If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.
(c)
Interpretation:Each stereocenter in the indicated cyclohexane should be labeled as either R or S.
Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.
The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.
If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.
(d)
Interpretation:Each stereocenter in the indicated cyclohexane should be labeled as either R or S.
Concept introduction:In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as a and so on.
The Fischer projection is written along with the priorities assigned and groups are interchanged between adjacent places so as to obtain lowest priority group at the bottom or lowest priority.
If the groups now are arranged are read from highest towards least in clockwise fashion the R is assigned to the stereocenter, if the rotation is anticlockwise the S is assigned at the configuration.
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Organic Chemistry: Structure and Function
- For the following molecules: a. How many stereogenic centers are present? b. How many stereoisomers are possible for these molecules?arrow_forwardStereoisomers differ from each other in what respect? A.) Composition B.) Constitution C.) Configuration D.) Steric hindrance E.) Nonearrow_forwardDraw a molecule that has one R stereocenter.arrow_forward
- As a fischer projection is the compound R or S and which group is the highest priority ?arrow_forwardFor each of the following compounds, give the correct R/S notation for all stereocentersarrow_forwardPlease answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. a. Do enantiomers have the same molecular formula? b. Does one structural formula represent both members of a pair of enantiomers? c. Are enantiomers stereoisomers?arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning