1. Hydrochlorides of amino acid chlorides react with triethyl phosphite with formation of the hydrochlorides of the corresponding amino α-oxo phosphonic esters. 2. The hydrochlorides of diethyl glycylphosphonate, diethyl ...
1. We have made observations on the electron paramagnetic resonance of the free radical triphenylphenoxyl. 2. For di-(2,4,6-triphenyl)phenyl diselenide, synthesized for the first time, no dissociation into free radicals ...
1. We determined the components of the axes of the polarizability ellipsoid of the sulfite group O2S=O and their orientation with respect to the bonds. 2. The ethylene sulfite molecule has the conformation of an envelope; ...
1. The dipole moments and Kerr constants of adducts of cyclopentadiene with maleic anhydride and methacrylonitrile and the oxide of the latter were measured. 2. The axes of the ellipsoids of polarizability of the carbon-carbon ...
1. Dinaphthylchloromethane, dinaphthylbromomethane, 9-chlorofluorine and 9-bromofluorine did not react in the experimental conditions. 2. Phenanthrene was formed by reaction of sodium diethyl phosphite and triethyl phosphite ...
1. In the interaction of dialkylphosphorous acids(Alk=CH3-, C2H5-, C3H7 -, C4H9) with acetone cyanohydrin, azeotropic mixtures of the composition (RO)2P(O)H: acetone cyanohydrin are formed. R=CH3, 0.66:1, R=C2H5, 1:1; ...
1. Benzoyl isocyanate reacts with acrolein and diphenylacetylene by the 1,2-cyclo-addition type. 2. Benzoyl isocyanate and trichloroacetyl isocyanate react with γ -vinylpyridine by the 1,4-cyclo-addition type, with the ...
1. Some products of the interaction of dibromoethylenes and tribromoethylene with cyclic dienes were produced. 2. The dipole moments of trans-5, 6-dibromonorbornene, 9-bromodihydroethyleneanthracene, and endo-cis-5, ...
1. β-(Dimethylphosphono)propionaldehyde was obtained by hydrolysis of 2,2,2-trimethoxy-Δ4-oxaphospholene. 2. Upon reaction of 2,2,2-trimethoxy-Δ4-oxaphospholene with acetic acid and acetic anhydride, opening of the phosphorane ...
1. The composition of the resin acids of the oleoresin of Pinus pithyusa was studied. The compositions of the resin acids that crystallized out and the resin acids that remained in solution were identical. The resin acids ...
1. By the condensation of α -campholenaldehyde in alkaline with acetone with acetone, 2-butanone, acetophenone, mesityl oxide, and 6-methyl -5 -hepten-2-one, the corresponding unsaturated ketones have been prepared. In ...
1. Analysis of1H NMR spectra has shown that the thiooxide obtained from the α-oxide of Δ3-carene has the two three-membered rings in the cis-configuration, while the thiooxide obtained from the β-oxide is a trans-isomer. ...
1. The hydroxyl groups in 2β,3α-caranediol occupy diaxial positions, and those in 2α,3β-caranediol occupy diequatorial positions. 2. 2α,3α-Caranediol and 2β,3β-caranediol exist predominantly in forms with an axial tertiary ...
5-Chlorotrimethylene selenite, with mp 157-159°, is the trans-isomer, in which in the liquid form and in solution is realized a dynamic equilibrium of two forms, diaxial and diequatorial, with a predominance of the less ...
1. The conformations of 2-benzylidenecyclohexanone, its 2-p-halo-derivatives, and pulegone were investigated by the method of dipole moments (DM). These compounds have a half-chair conformation, while the phenyl radical ...
1. According to the data of the dipole moments, Kerr effects, light scattering, and IR spectra, 1,3-dihalopropanes symmetrically substituted in the 2-position are represented in CCl4 by conformers with trans-gauche and ...
1. The sulfate, selenite, chloroarsenite, and bromoarsenite of 2,2-diphenyl-1,3-propanediol have been synthesized. 2. In the molecules of cyclic esters based on 2,2-diphenyl-l,3-propanediol, in the dissolved state, equivalent ...
1. The dipole moment (2.94 D) and the main semiaxes of the polarizability ellipsoid (3.863, 4.173, 1.115 å) of the carbonate group have been determined. 2. Based on combined structural studies the C-envelope is the most ...
1. The protonation of the 2-phenyl-5-nitro-1,3-dioxane anion with water leads via equatorial attack to the cis-isomer. 2. 2-Aryl-5-nitro-1,3-dioxanes have a cis-configuration with an axial NO2 group. 3. 2,2-Dimethy1-5-ni ...