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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EBK GENERAL, ORGANIC, & BIOLOGICAL CHEM
- Draw the Fischer projection for structure I. Circle each chiral group in structure II.arrow_forwardRe-draw each Fischer projection formula using wedges and dashed wedgesfor the stereogenic center, and label the center as R or S.arrow_forwardConvert each ball-and-stick model to a Fischer projection, a. b.arrow_forward
- Draw 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_forwardThis is one enantiomer of the molecule. OH H CCH2-CH2-CH3 CH3 Draw the structure of the other enantiomer using wedges and dashes. Click and drag to start drawing a structure.arrow_forward8. 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_forward
- Convert the Fischer projection to a perspective formula. H-COO-CH2CH3-CH3arrow_forwardIdentify the molecules and draw their Newman and Fischer projectionsarrow_forwardThe 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_forward
- Draw 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_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_forwardClassify this Fischer projection as a D- or L- enantiomer. H HO HO HO HO c=0 III H CH2OHarrow_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