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The Haworth synthesis is a classic method for the synthesis of polycyclic aromatic hydrocarbons. In this reaction, an arene is reacted with succinic anhydride , the subsequent product is then reduced in either a Clemmensen reduction or a Wolff-Kishner reduction .
Norman Haworth. Sir Walter Norman Haworth FRS [ 1 ] (19 March 1883 [ 2 ] – 19 March 1950) was a British chemist best known for his groundbreaking work on ascorbic acid (vitamin C) while working at the University of Birmingham. He received the 1937 Nobel Prize in Chemistry "for his investigations on carbohydrates and vitamin C".
Haworth projection. In chemistry, a Haworth projection is a common way of writing a structural formula to represent the cyclic structure of monosaccharides with a simple three-dimensional perspective. Haworth projection approximate the shapes of the actual molecules better for furanoses —which are in reality nearly planar—than for pyranoses ...
[2] [3] In reference to the compound's antiscorbutic properties, Haworth and Szent-Györgyi proposed to rename it "a-scorbic acid" for the compound, and later specifically l-ascorbic acid. [4] Because of their work, in 1937 two Nobel Prizes: in Chemistry and in Physiology or Medicine were awarded to Haworth and Szent-Györgyi, respectively.
From 1927 he was a professor at the University of Newcastle and from 1939 at the University of Sheffield . He researched the chemistry of natural products including resins, tannins, and the structure and synthesis of alkaloids . A variant of the Friedel-Crafts alkylation, the Haworth reaction, is named after him (1932). It creates 1-tetralone.
Glucose is a monosaccharide containing six carbon atoms and an aldehyde group, and is therefore an aldohexose. The glucose molecule can exist in an open-chain (acyclic) as well as ring (cyclic) form. Glucose is naturally occurring and is found in its free state in fruits and other parts of plants.
Aldonic acids are sugar acids with the general chemical formula, HO 2 C (CHOH) n CH 2 OH. They are obtained by oxidizing the aldehyde (-CHO group) of an aldose to form a carboxylic acid (-COOH group). [1] Aldonic acids are generally found in their ring form. However, these rings do not have a chiral carbon at the terminal end bearing the ...
Cellobiose is a disaccharide with the formula (C 6 H 7 (OH) 4 O) 2 O. It is classified as a reducing sugar - any sugar that possesses the ability or function of a reducing agent. The chemical structure of cellobiose is derived from the condensation of a pair of β-glucose molecules forming a β (1→4) bond.