Glycols oxidative

Particle size (/rm) Pore size (A) Molecular weight of sample Polyethylene glycol/oxide... 

Replacement of the carbamate function by an amide seems to be compatible with meprobamate-like activity in a compound formally derived from a 1,2-glycol. Oxidation of the commercially available aldehyde, 22, under controlled conditions affords the corresponding acid (23). This is then converted to its amide (24) via the acid chloride. Epoxidation by means of perphthalic acid affords oxanamide (25). ... 

Alkenes can also be oxidized with metallic acetates such as lead tetraacetate or thallium(III) acetate " to give bis-acetates of glycols. Oxidizing agents such as benzoquinone, Mn02, or 02, along with palladium acetate, have been used to convert conjugated dienes to l,4-diacetoxy-2-alkenes (1,4 addition). ... 

The mechanism of glycol oxidation with Pb(OAc)4 was proposed by Criegee ... 

However, the cyclic-intermediate mechanism cannot account for all glycol oxidations, since some glycols that cannot form such an ester (e.g., 12) are nevertheless cleaved by lead tetraacetate... 

Kataoka M, Sasaki M, Hidalgo AR, Nakano M, Shimizu S (2001) Glycolic acid production using ethylene glycol-oxidizing microorganism. Biosci Bio-technol Biochem 65(10) 2265-2270... 

Table 14. Catalytic activity and selectivity of the 12g x 80g Au/ X40S preparations and 2g x 500g Au/XC72R (a) and 2g preparations (b) in the ethylene glycol oxidation.

See Organic solvents, below See other irradiation decomposition incidents Ethylene glycol See Ethylene glycol Oxidants... 

Van den Meerakker [51] proposed a mechanism for methylene glycolate oxidation at Cu that included a step involving dehydrogenation of adsorbed methylene glycolate anion ... 

Glycol methyl ethers (glymes), 14 247 Glycolonitrile, 8 174 hydrolysis of, 14 128 Glycols, 12 644-682. See also Ethylene glycols (EGs) Propylene glycols oxidation of, 12 663 reaction with dibasic acid anhydrides, 20 98... 

In an acidic medium, a PEMFC fed with ethanol allows power densities up to 60 mW cm to be reached at high temperatures (80-120 °C), but this needs platinum-based catalysts, which may prevent wider applications for portable electronic devices. On the other hand, in an alkaline medium, the activity of non-noble catalysts for ethanol or ethylene glycol oxidation and oxygen reduction is sufficient to reach power densities of the order of 20 mW cm at room temperature. This opens up the hope of developing SAMFCs that are particularly efficient for large-scale portable applications. 

The synthesis of the progestin antagonist onapristone (31-2) also starts with the saponification product from (24-2). In this case, the intermediate is first converted to a 3,3-drmethylpropylene acetal by reaction with neopentyl glycol oxidation as... 

With respect to the side chain, although some standard reactions failed [78], different correlation reactions assayed to confirm the structure of new isolated members were achieved successfully, some examples include oxidation of the podolactone C sulphoxide group to give the corresponding sulphone (110), as well as the glycol oxidative cleavage of... 

The oxidation of lauryl aldehyde gives lauric acid in 53.4% yield. This reaction is not exothermic and is much slower than that of the corresponding alcohol. Neopentyl glycol oxidizes to a low molecular weight polyester in 21% yield. 

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