jecazmaj
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Wolfroms synthesis fructose
Wolfroms synthesis fructose from image attached ... This is my exam question. Anyone ?
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Nicodem
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| Quote: | Originally posted by jecazmaj
Wolfroms synthesis fructose from image attached ... |
How can you synthesize fructose from an image? If this Wolfroms really synthesized anything from an image, attached or not, he must have been a real
genius!
…there is a human touch of the cultist “believer” in every theorist that he must struggle against as being
unworthy of the scientist. Some of the greatest men of science have publicly repudiated a theory which earlier they hotly defended. In this lies their
scientific temper, not in the scientific defense of the theory. - Weston La Barre (Ghost Dance, 1972)
Read the The ScienceMadness Guidelines!
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JohnWW
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If that is supposed to be fructose tetra-acetate, it can be converted back to fructose by hydrolysis with an aqueous mineral acid..
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Ozone
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Actually, the synthesis if from ababinonic acid and is rather interesting (why, when fructose is so cheap?).
From the patent:
United States Patent 4623721
Synthesis of L-fructose and derivatives thereof
by:
Chen, Chyi-Cheng (Gaithersburg, MD, US)
Whistler, Roy L. (West Lafayette, IN, US):
L-Fructose, which has not been found in nature, was synthesized for the first time by Fischer. See E. Fischer, Ber., 23 (1890) 370-394. DL-Glucose
phenylosazone was prepared from .alpha.-acrose and hydrolyzed to the glycosulose, which was reduced to DL-fructose. L-Fructose was isolated from the
mixture. L-Fructose was later synthesized by Wolfrom and Thompson from L-arabinonic acid in five steps. See M. L. Wolfrom and A. Thompson, Methods of
Carbohydr. Chem., 1 (1962) 118-120.
Cheers,
O3
-Anyone who never made a mistake never tried anything new.
--Albert Einstein
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jecazmaj
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| Quote: | Originalno postavio/la Nicodem
| Quote: | Originally posted by jecazmaj
Wolfroms synthesis fructose from image attached ... |
How can you synthesize fructose from an image? If this Wolfroms really synthesized anything from an image, attached or not, he must have been a real
genius! |
You are so funny ...
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jecazmaj
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| Quote: | Originalno postavio/la Ozone
Actually, the synthesis if from ababinonic acid and is rather interesting (why, when fructose is so cheap?).
From the patent:
United States Patent 4623721
Synthesis of L-fructose and derivatives thereof
by:
Chen, Chyi-Cheng (Gaithersburg, MD, US)
Whistler, Roy L. (West Lafayette, IN, US):
L-Fructose, which has not been found in nature, was synthesized for the first time by Fischer. See E. Fischer, Ber., 23 (1890) 370-394. DL-Glucose
phenylosazone was prepared from .alpha.-acrose and hydrolyzed to the glycosulose, which was reduced to DL-fructose. L-Fructose was isolated from the
mixture. L-Fructose was later synthesized by Wolfrom and Thompson from L-arabinonic acid in five steps. See M. L. Wolfrom and A. Thompson, Methods of
Carbohydr. Chem., 1 (1962) 118-120.
Cheers,
O3 |
thanks
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