Concept explainers
(a)
Interpretation:
Three-dimensional representation of a given Fischer projection should be drawn.
Concept Introduction:
Fischer Projection is a method of drawing 3-D structures of organic molecules using cross formula. In this method, all non-terminal bonds are depicted as horizontal or vertical lines.
In the Fischer projection, horizontal bonds represent groups coming forward (drawn as wedges) and vertical bonds represent groups going backward (drawn as dashed wedges).
(b)
Interpretation:
Three-dimensional representation of a given Fischer projection should be drawn.
Concept Introduction:
Fischer Projection is a method of drawing 3-D structures of organic molecules using cross formula. In this method, all non-terminal bonds are depicted as horizontal or vertical lines.
In the Fischer projection, horizontal bonds represent groups coming forward (drawn as wedges) and vertical bonds represent groups going backward (drawn as dashed wedges).
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GENERAL,ORGANIC, & BIOLOGICAL CHEM-ACCES
- 8. Assign each chiral carbon as R or S in compound-A. Draw the mirror image of compound-A and assign configuration to each chiral carbon. (note that the dotted line represents the mirror). H₂N S OH Compound A CH3 CH3 mirror CH3 CH 3 Mmok NHZarrow_forwardDraw a Fischer projection for each compound. Remember that the cross represents an asymmetric carbon atom, and the carbon chain should be along the vertical, with the IUPAC numbering from top to bottom.(R)-2-bromobutan-1-olarrow_forwardConvert the Fischer projection to a perspective formula. H-COO-CH2CH3-CH3arrow_forward
- Re-draw each Fischer projection formula using wedges and dashed wedgesfor the stereogenic center, and label the center as R or S.arrow_forwardConvert each three-dimensional representation into a Fischer projection.arrow_forward2. Label each pair as enantiomer, diastereomer or same molecules. OCH3 HgCO OCH, CN H3C CEN and ÓCH3 H CH3 and CIarrow_forward
- Draw a Fischer Projection formula for the enantiomer of each of the following monosaccharides.arrow_forwardConsider the two Fischer projections shown . They are NOT of the same molecule. Explain why the molecules shown are NOT the same? Describe how the groups of a Fischer projection are positioned in the ACTUAL molecule (Are the molecules flat in real life, or three-dimensional in real life? If three-dimensional, where exactly are the Hs and OHs positioned when one interprets these projections? Describe why the second molecule is not simply the first molecule flipped over (like a pancake).arrow_forwardDraw a Fischer projection for each compound. Remember that the cross represents an asymmetric carbon atom, and the carbon chain should be along the vertical, with the IUPAC numbering from top to bottom.(R)-glyceraldehyde,arrow_forward
- The Fischer projection for linear D-glucose is shown. Fill in the missing H's and OH's for the wedge and dash projections. Then convert to a Haworth projection for both a-D-glucose and B-D-glucose in linear form. Next, convert to the cyclic form and finally to a chair conformation for both pyranoses. Haworth projection pyranose (chair) CHO H- HO- H -OH -H -OH H-OH CH₂OH = 4 3 4 5 6 3 a-D-glucose rotate 90° clockwise OH H ba 1 6 4 5 B-D-glucose 5 4 3 3 -OH O 1 Harrow_forwardDraw the mirror image in Fischer Projection ("flat representation").arrow_forwardConsider the following molecules (a-h) and answer the questions below:i. How many chiral carbon does it contains?ii. Does the molecule have any internal plane of symmetry?iii. Identify the molecule whether it is chiral of achiral?iv. Does it rotate the plane of polarized light?v. Is the molecule optically active?vi. Is meso compound present?vii. Draw all possible stereoisomers for the molecule in Fischer projection and label the relationship between each of the isomer.arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningOrganic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning