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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 ...
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 ...
Reactions with lead tetraacetate-I. Oxidation of saturated aliphatic alcohols part 1
(Elsevier, 1964)
When oxidized with lead tetraacetate 1-heptanol and 1-octanol undergo cyclization to give as major products the corresponding 2-alkyltetrahydrofurans, accompanied by a small amount of the isomeric tetrahydropyran derivatives. ...
Lead tetraacetate oxidation of saturated aliphatic alcohols-IV. The formation of six-membered cyclic ethers
(Elsevier, 1965)
The lead tetraacetate oxidation of saturated aliphatic alcohols, with structures which do not permit 1,5-cyclization, gave tetrahydropyran derivatives in yields not exceeding 16%. The formation of a small amount of the ...
New Methods of Obtaining Fuel Cell Electrodes: IV . Powder Electrode Fuel Cell with Lateral Feeding
(USA : American Chemical Society, 1969)
A previously developed powder electrode in combination with lateral feeding with gases has been further improved. A fuel cell without gas chambers and with loose carbon powder electrodes has been constructed and tested ...
Studies on Chlorate Cell Process: III . Depolarization of Cathodic Hydrogen Evolution in the Bipolar Chlorate Cell Process
(IOP Publishing, 1969)
The cathode process of hydrogen evolution in chlorate cells, including possible depolarization, has not been studied to date. High hydrogen polarization at graphite electrodes delayed the industrial application of bipolar ...
Configuration and reactivity of ten-membered 5,10-seco-compounds obtained by fragmentation of 5-hydroxy-steroids
(Elsevier, 1966)
Assignment of configuration to the 1,10-double bond in the cis-trans isomeric 3β-acetoxy-5,10-seco-1,10-cholesten-5-ones has been achieved by means of NMR spectrometry. Some reactions of these new compounds have been studied ...
The structure of glycerol acetals
(Elsevier, 1967)
It is known that the condensation of with polyols yields cyclic acetals. Thus, carbonyl compounds it is known that by condensation of benzaldehyde with glycerol, a mixture of 2-phenyl-5-hydroxy-1,3-dioxane and 2-phenyl-4 ...
Preparation and photolysis of 2-diazo-6-oximino- and 2,6-bisdiazo-4-tert. Butylcyclohexanone
(Elsevier, 1967)
Reaction mechanism of diazoketone photolysie is assumed
to involve the formation ofd-keto-carbene intermediates, final products being dependent on the molecular structure and
reaction medium. Numerous example8 of ...
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 ...