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Dihydroxylation information


Dihydroxylation is the process by which an alkene is converted into a vicinal diol. Although there are many routes to accomplish this oxidation, the most common and direct processes use a high-oxidation-state transition metal (typically osmium or manganese). The metal is often used as a catalyst, with some other stoichiometric oxidant present.[1] In addition, other transition metals and non-transition metal methods have been developed and used to catalyze the reaction.

  1. ^ Carey, Francis A.; Sundberg, Richard J. Advanced Organic Chemistry Part B: Reactions and Synthesis (5th ed.). Springer.

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Dihydroxylation

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Dihydroxylation is the process by which an alkene is converted into a vicinal diol. Although there are many routes to accomplish this oxidation, the most...

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Sharpless asymmetric dihydroxylation

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Sharpless asymmetric dihydroxylation (also called the Sharpless bishydroxylation) is the chemical reaction of an alkene with osmium tetroxide in the presence...

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Upjohn dihydroxylation

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The Upjohn dihydroxylation is an organic reaction which converts an alkene to a cis vicinal diol. It was developed by V. VanRheenen, R. C. Kelly and D...

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Osmium tetroxide

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the amine is chiral, then the dihydroxylation can proceed with enantioselectivity (see Sharpless asymmetric dihydroxylation). OsO4 does not react with most...

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Milas hydroxylation

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superseded in synthetic chemistry by the Upjohn dihydroxylation and later by the Sharpless asymmetric dihydroxylation. The proposed mechanism for the Milas hydroxylation...

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Dihydroquinidine

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this molecule is used as chiral ligand in the AD-mix for Sharpless dihydroxylation. The substance is also a class Ia antiarrhythmic medication. Dihydroquinine...

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Karl Barry Sharpless

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science fiction to the relatively routine, including aminohydroxylation, dihydroxylation, and the Sharpless asymmetric epoxidation. In 2001 he was awarded a...

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Dihydroquinine

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this molecule is used as chiral ligand in the AD-mix for Sharpless dihydroxylation. DHQ also inhibits growth of the parasite Toxoplasma gondii by inducing...

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Enantioselective synthesis

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asymmetric oxidations (Sharpless epoxidation, Sharpless asymmetric dihydroxylation, Sharpless oxyamination) during the 1970s and 1980s. With the asymmetric...

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Potassium ferricyanide

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chemistry. It is an oxidant for catalyst regeneration in Sharpless dihydroxylations. Potassium ferricyanide is also one of two compounds present in ferroxyl...

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Ketone

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Houben–Hoesch reaction, and the Fries rearrangement. Ozonolysis, and related dihydroxylation/oxidative sequences, cleave alkenes to give aldehydes or ketones, depending...

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Potassium osmate

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solution. The salt gained attention as a catalyst for the asymmetric dihydroxylation of olefins. The complex anion is octahedral. Like related d2 dioxo...

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Hydroxylation

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some reactions add OH groups to unsaturated substrates. The Sharpless dihydroxylation is such a reaction: it converts alkenes into diols. The hydroxy groups...

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Osmium

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important oxidants in organic synthesis. For the Sharpless asymmetric dihydroxylation, which uses osmate for the conversion of a double bond into a vicinal...

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Quinidine

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Quinidine-based ligands are used in AD-mix-β for Sharpless asymmetric dihydroxylation. Quinidine sulfate is used in the treatment of atrial fibrillation...

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Diol

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to vicinal diols. The chemical reaction called Sharpless asymmetric dihydroxylation can be used to produce chiral diols from alkenes using an osmate reagent...

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Catalysis

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tetroxide (OsO4) is a good reagent for dihydroxylation, but it is highly toxic and expensive. In Upjohn dihydroxylation, the sacrificial catalyst N-methylmorpholine...

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Upjohn

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chemical research, the company is known for the development of the Upjohn dihydroxylation by V. VanRheenen, R. C. Kelly, and D. Y. Cha in 1976. Upjohn's best...

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Homogeneous catalysis

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complexes, as illustrated by the Halcon process and the Sharpless dihydroxylation. Enzymes are homogeneous catalysts that are essential for life but...

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Sharpless oxyamination

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a vicinal amino alcohol. The reaction is related to the Sharpless dihydroxylation, which converts alkenes to vicinal diols. Vicinal amino-alcohols are...

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Kinetic resolution

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use on a number of secondary allylic alcohols. Sharpless asymmetric dihydroxylation has also seen use as a method for kinetic resolution. This method is...

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Stereoselectivity

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kinetic resolution results. Another example is Sharpless asymmetric dihydroxylation. In the example below the achiral alkene yields only one of the possible...

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List of inorganic reactions

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Sulfidation Suzuki reaction Transmetalation Ullmann reaction Upjohn dihydroxylation Vollhardt cyclization Wacker process Water gas shift reaction Water...

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Pyrene

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biodegradation has been heavily examined. The process commences with dihydroxylation at each of two kinds of CH=CH linkages. Experiments in pigs show that...

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Organotechnetium chemistry

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has been shown to react similarity to osmium. Able to catalyze a cis dihydroxylation. Kowalsky RJ (2006). "Technetium Radiopharmaceutical Chemistry" (PDF)...

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