27742-33-2Relevant academic research and scientific papers
Process for preparing unsaturated imidoalkoxysilanes
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Page/Page column 4/1, (2008/06/13)
A process is provided for preparing unsaturated imidoalkoxysilane which comprises imidating substantially water-free Diels-Alder protected unsaturated N-substituted cyclic imide with aminosilane to provide Diels-Alder protected unsaturated imidoalkoxysilane without the use of chemical desiccants. The Diels-Alder protected unsaturated imidoalkoxysilane produced is then deprotected to provide unsaturated imidoalkoxysilane and the Diels-Alder protecting diene is regenerated to the process. A Diels-Alder intermediate is also provided.
Phthalocyanines and related compounds: XLI. Synthesis of 9,10-diphenylanthracene-2,3-dicarboxylic acid derivatives
Donyagina,Kovshev,Luk'yanets
, p. 654 - 658 (2008/02/07)
Derivatives of 9,10-diphenylanthracene-2,3-dicarboxylic acid were synthesized by the Diels-Alder reaction of 1,3-diphenylisobenzofuran with adducts of furan (or silvan) and the corresponding maleic (fumaric) acid derivative or with trans-cyclohex-4-ene-1,2-dicarbonitrile, followed by aromatization. Pleiades Publishing, Inc., 2006.
5,6-DIHYDROXY-ISOINDOLE DERIVATIVES AS LINKERS FOR OLIGOMER SOLID PHASE SYNTHESIS
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Page/Page column 55-56, (2008/06/13)
Universal linkers or formula (I), their facile processes of manufacture and methods of using the same are provided.
The nature of lithium perchlorate and gallium chloride salt effect in cycloaddition reactions
Shtyrlin, Yury G.,Murzin, Dmitry G.,Luzanova, Natalia A.,Iskhakova, Gulnara G.,Kiselev, Vladimir D.,Konovalov, Alexandr I.
, p. 2631 - 2646 (2007/10/03)
Comparing the acceleration effects of (4 + 2)-, (3 + 2)- and (2 + 2)-cycloaddition reactions in the presence of the salts of two types: gallium chloride in inert solvents and lithium perchlorate (LP) in diethyl ether (DE) it was observed that in the presence of GaCl3 the acceleration effect is approximately the same (104 times) for the studied reactions, while in LPDE medium for the same reactions strong increase (up to 104 times), weak increase or even decrease of the rate and equilibrium constants take place even with the common dienophile depending on the nature of the second reagent. it was suggested that the acceleration effect of cycloaddition reactions in the presence of such Lewis acids as aluminum, gallium or boron halides is due to the sharp increase of Π-acceptor properties of dienophiles and therefore increasing energy of orbital interaction, whereas LPDE medium demonstrates strong stabilization of static and/or dynamic polar forms and favors reactions with charge control.
REACTIONS IN SALT MEDIA. KINETICS AND THERMODYNAMIC OF DIELS-ALDER REACTIONS IN LITHIUM PERCHLORATE SOLUTIONS
Shtyrlin, Yu. G.,Kiselev, V. D.,Murzin, D. G.,Sadyukova, O. N.,Konovalov, A. I.
, p. 1423 - 1427 (2007/10/02)
The kinetics and thermodynamics of a series of Diels-Alder reactions in solutions of lithium perchlorate in organic solvents (ether, ethanol, acetone) were studied.The reaction rates in concentrated lithium perchlorate solutions are increased by 18-3000 t
