منابع مشابه
Setting Cyclohexane Stereochemistry with Oxidation
Thanks to its atomand step-economy, C–H bond oxidation represents a “hot topic” in synthetic chemistry. However, due to the ubiquity of such bonds in organic molecules, regioand enantioselective C–H bond oxidation turns out to be extremely challenging, and efficient direct methods are in high demand. Compared to the success of aliphatic sp C–H oxidation by enzymes (such as cytochrome P450, Figu...
متن کاملMicelles of polybutadiene-b-poly(ethylene oxide) in methanol, cyclohexane, and methanol + cyclohexane.
We have studied the self-assembly of a polybutadiene-b-poly(ethylene oxide) diblock copolymer in methanol, in cyclohexane, and in the partially miscible binary mixture of methanol + cyclohexane. Molecular probe experiments indicated that PB(89)-b-PEO(132) (subscripts indicate the number of monomers in each block) forms micelles with PEO cores and PB coronas in pure cyclohexane and micelles with...
متن کاملGamma-radiolysis of aqueous solution of proline.
Gamma-radiolysis of 0.05 M neutral proline solution was investigated. As the main reaction of proline radiolysis in oxygenated solutions, the hydroxylation reactions leading to hydroxyproline formation and the reactions leading to the total destruction of the pyrrolidine ring were shown. In oxygen-free solutions the yield of these reactions decreased; in this medium combination reactions giving...
متن کاملGamma-radiolysis of aqueous solution of histidine.
The dependence of Gi(-M) values of histidine on the concentration of irradiated 10(-4) - 10(-1)M solutions, pH and the presence of O2, N2O and sec-butyl alcohol was investigated. In oxygen-free medium the maximum radiation sensitivity of histidine was found at pH 5--8; in oxygenated solutions it was shifted to the 6--1 pH range. The formation of radiation products was also studied. The course o...
متن کاملRadiolysis of Liquid Propane: non-Radical Reactions
The yields of ionic and excited molecule reactions in y-radiolysis of liquid propane from 35 to -130C have been assessed by isotopic analysis of C3Hs-l-C3Ds+Oz and CH3CD2CH3 -1-02 mixtures. From a comparison with gas phase data the following conclusions are reached for the gas to liquid phase change: (a) the ionic decomposition yield rlecreases by :5 69 %, (b) the net excited molecule decomposi...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1960
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.81.4_555