1186-53-4Relevant academic research and scientific papers
Preparation method and application of polysubstituted ethyl alkane
-
Paragraph 0061-0064; 0066, (2021/10/05)
The preparation method comprises the following steps: in an inert atmosphere, adding a raw material alcohol to a reaction kettle, then adding a solvent, a dehydration catalyst and a stabilizer to carry out reaction, carrying out rectification after reaction, and dividing the distillate to obtain olefin. The olefin is added to the hydrogenation kettle, and then water and a hydrogenation catalyst are added to replace the nitrogen to be hydrogenated and hydrogenated, and after the hydrogenation is finished, the catalyst is removed by filtration. The polysubstituted ethane alkane prepared by the invention does not generate waste in the production process, and all materials other than the main materials in the production process can be used for multiple times. The added water can greatly reduce the generation of static electricity in the production process, so that the product production safety is greatly improved. The yield of the polysubstituted ethane alkane is higher than 98%, and the purity is greater than 99.8%.
Thermolabile Hydrocarbons, XXI. Relationships between Thermal Stability and Strain of Non-Symmetrical Highly Branched Hydrocarbons
Hellmann, Siegried,Beckhaus, Hans-Dieter,Ruechardt, Christoph
, p. 2238 - 2249 (2007/10/02)
The pyrolysis reaction of 20 hydrocarbons 3 into radicals 4 and tert-butyl radicals was investigated by product analysis and kinetics.It is shown that the same relationships between the free enthalpies of activation and the strain energies observed earlier for the cleavage of symmetrically substituted CC bonds are valid for the cleavage of unsymmetrical substituted bonds.The introduction of the new concept "strain energy of dissociation" (difference in strain between the ground state 3 and the residual strain in the radical fragments 4 and 5) has proven to be particularly useful.It is now possible to predict the rate of homolytic cleavage of almost all simple CC bonds by force field calculations.
Thermolabile Hydrocarbons, XIX. Syntheses, Spectra, Structures, and Strain of Highly Branched Pentanes
Hellmann, Siegried,Beckhaus, Hans-Dieter,Ruechardt, Christoph
, p. 2219 - 2237 (2007/10/02)
The syntheses and spectroscopic properties of eight hydrocarbons R1R2CH-C(CH3)3 (3a-h) and of ten hydrocarbons R1R2R3C-C(CH3)3 (4a-k) (R = alkyl) are described.Their structures and strain enthalpies are discussed on the basis of force field calculations.
