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Prikaz rezultata 11-20 od 23
Investigation of active carbon for fuel-cell electrodes
(Elsevier, 1969)
The influence of grain size, mode of catalyst impregnation, and different surface treatments on the electrochemical activity of active carbon for hydrogen fuel-cell electrodes was studied. The experiments were done in a ...
Opening of steroid ring a by means of lead tetraacetate
(Elsevier, 1964)
The lead tetraacetate oxidation of cholestan-1β-ol and cholestan-1α-ol in benzene solution did not afford cyclic ethers but resulted, in major part, in the opening of ring A with formation of 1,10-seco-aldehydes. In addition, ...
Lead tetraacetate oxidation of saturated aliphatic alcohols.-III. Unbranched primary and secondary alcohols
(Elsevier, 1965)
The action of lead tetraacetate, in benzene solution, on various unbranched primary and secondary aliphatic alcohols containing 4 to 12 carbon atoms has been investigated and the ratio of carbonyl compounds, cyclic ethers ...
A proposal for use of "Tandel" to obtain optimal temperature of electro-optical devices
(Elsevier, 1966)
A proposal is given for the use of Tandel to obtain the desirable temperature of ferroelectric crystal and optimal working temperature of electro-optical devices as well. The variation of ∈ due to temperature inhomogeneity ...
The conversion of unbranched primary alkyl and arylalkyl amines to nitriles by means of lead tetraacetate
(Elsevier, 1965)
The only amino compounds oxidized so far with lead tetroacetate were primary aromatic amines, which gave mainly the corresponding azo compounds(1), and some tertiary aryldialkyl amines, which in glacial acetic acid in the ...
Selective borane reductions of progesterone
(Elsevier, 1967)
A number of selective reductions using borane end metal borohydrides has been described. In our studies of hydroboration of steroid conjugated ketones under different conditions and with different solvents we have found ...
An improved preparation of 3-α-acetoxy-11,20-diketo-(5β)-pregnane, the key intermediate in the synthesis of 11-oxygenated corticosteroids
(Elsevier, 1967)
Although microbiological methods of introducing oxygen at C-11 of the steroid molecule are effective, it is obvious that purely synthetic way of producing cortisone and its analogs from bile acids or hecogenin have never ...
Study of the reactions of hexanitrocobaltates(III) with amino acids. II. Determination of the configuration of dinitrobis(glycinato)cobaltate(III) ions
(USA : American Chemical Society, 1965)
In a previously published paper1 we have undertaken
a study of the reactions of hexanitrocobaltate(III)
with amino acids. The first reaction we studied was
that of glycine with potassium and sodium hexanitrocobaltate(
III). ...
Studies on Chlorate Cell Process: V . Theory and Practice of a Modified Technology for Electrolytic Chlorate Production
(IOP Publishing, 1969)
A modified technology for electrolytic chlorate production has been developed.
The cell is considered as a hypochlorite generator and the holding
volume as a reactor for the conversion of available chlorine to chlorate. ...
The reaction of lead tetra-acetate with some acyclic hydroxy-ethers
(Elsevier, 1966)
By means of lead tetra-acetate in refluxing benzene open-chain 1,2-, 1,3-, 1,4- and 1,5-hydroxy-ethers are mainly converted to the corresponding five-membered or six-membered cylic products. Thus, 2-alkoxy-1-ethanols afford ...