Sodium metaperiodate Metaperiodic acid

Separated polyols are detected by a variety of reagents, including ammoniacal silver nitrate (175), concentrated sulfuric acid, potassium permanganate (163), lead tetraacetate, and potassium teUuratocuprate (176). A mixture of sodium metaperiodate and potassium permanganate can be used to detect as htde as 5—8 ).tg of mannitol or erythritol (177). 

Desilylation of the major jjw-isomer, followed by oxidative cleavage with sodium metaperiodate, liberates the 3-hydroxy-2-methyl carboxylic acids. The immolative character of this method, i.e., the destruction of the chiral auxiliary reagent in the final glycol cleavage, is a drawback. 

Sodium metaperiodate [Metapenodic acid, sodium salt], 55, 68 Sodium, toluene dispersion of, 55, 65 Spiro[cyclopentane-l,l -indene], 55, 94 CE) Stilbene [Benzene, 1,1 (1,2-ethenediyl)-bis-], 55,115... 

Metaperiodic acid, sodium salt [Sodium metapenodate], 55,68 Methane, bromo-, 55, 63 Methane, chlorodiphenyl- [Methyl chloride, diphenyl-], 55, 94... 

The method of choice for preparing thietane oxides is the oxidation of thietanes. This can be conducted using hydrogen peroxide, sodium hypochloride -, sodium metaperiodate , NaI04 and m-chloroperbenzoic acid . 

The selenides prepared by any of these methods can be converted to selenoxides by such oxidants as hydrogen peroxide, sodium metaperiodate, peroxycarboxylic acids, 1-butyl hydroperoxide, or ozone. 

Periodic acid, sodium metaperiodate, and potassium metaperiodate are now commercially available. Trisodium paraperiodate, NasPWOe, may be... 

In a study of the oxidation of 2-amino-2-deoxy-D-glucose (D-glucosamine) derivatives, Neuberger12 obtained better results using sodium metaperiodate (at its accompanying pH of 3 to 4) than with periodic acid at lower pH values and a pH of 4.5 was found by Jeanloz and Forchielli78a to be optimal for these derivatives. 

Mild allylic oxidation of the A-2-crotyl-substituted thiadiazolidinone 1,1-dioxide 140 by sodium metaperiodate/ ruthenium trichloride hydrate (RuC13) gave the aldehyde 141. Excess oxidizing agent afforded the carboxylic acid 142 (Equation 26) <1999EJ02275>. 

Sodium metaperiodate Periodic acid, sodium salt (8,9) (7790-28-5)... 

Treatment of a mixture of 76 and 77 with hydrogen fluoride (or fluoride anion) followed by sodium metaperiodate affords the corresponding 2,3-jyn-3-hydroxy-2-methylcarboxylic acids 79 and M in enantiomeric excesses higher than 98%. Therefore, with the proper selection of the ligands attached to the boron atom, the stereofacial selectivity of 74 exceeds 1(X) 1. 

The first of these is a 0.01 M aqueous solution of sodium metaperiodate. The second is prepared by dissolving 0.25 g of stannic chloride decahydrate in 100 mL of IN hydrochloric acid (this reagent must be prepared fresh before use). The third reagent is a 4% solution of ethyl acetoacetate in 20% aqueous ammonium acetate. To run the method, 0.2 mL of the sodium metaperiodate reagent is mixed with 1 mL of the sample dissolved in 2% ethanol, and allowed to let stand at room temperature for 20 minutes. After that, one adds 0.8 mL of the stannic chloride reagent,... 

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