Difference between haworth projection and fischer projection
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Fisher projections:
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▪show sugars in their open chain form. In a Fischer projection, the carbon atoms of a sugar molecule are connected vertically by solid lines, while carbon-oxygen and carbon-hydrogen bonds are shown horizontally. Stereochemical information is conveyed by a simple rule: vertical bonds point into the plane of the page, while horizontal bonds point out of the page.
▪Fischer projections are useful when looking at many different diastereomeric sugar structures, because the eye can quickly pick out stereochemical differences according to whethera hydroxyl group is on the left or right side of the structure...
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While Fischer projections are used for sugars in their open-chain form, Haworth projections are often used to depict sugars in their cyclic forms. Thebetadiastereomer of the cyclic form of glucose is shown below in three different depictions, with the Haworth projection in the middle.Notice that although a Haworth projection is a convenient way to show stereo chemistry, it does not provide a realistic depiction of conformation.To show both conformation and stereochemistry,you must draw the ring in the chair form, as in structure..hope help u☺
________
________
Fisher projections:
______________
▪show sugars in their open chain form. In a Fischer projection, the carbon atoms of a sugar molecule are connected vertically by solid lines, while carbon-oxygen and carbon-hydrogen bonds are shown horizontally. Stereochemical information is conveyed by a simple rule: vertical bonds point into the plane of the page, while horizontal bonds point out of the page.
▪Fischer projections are useful when looking at many different diastereomeric sugar structures, because the eye can quickly pick out stereochemical differences according to whethera hydroxyl group is on the left or right side of the structure...
____________________________________
While Fischer projections are used for sugars in their open-chain form, Haworth projections are often used to depict sugars in their cyclic forms. Thebetadiastereomer of the cyclic form of glucose is shown below in three different depictions, with the Haworth projection in the middle.Notice that although a Haworth projection is a convenient way to show stereo chemistry, it does not provide a realistic depiction of conformation.To show both conformation and stereochemistry,you must draw the ring in the chair form, as in structure..hope help u☺
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