Keglevich, György and Bálint, Erika and Takács, Judit and Drahos, László and Huben, Krzysztof and Jankowski, Stefan (2014) The Addition of Dialkyl Phosphites and Diphenylphosphine Oxide on the Triple Bond of Dimethyl Acetylenedicarboxylate under Solvent-Free and Microwave Conditions. CURRENT ORGANIC SYNTHESIS, 11 (1). pp. 161-166. ISSN 1570-1794
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Abstract
The addition of dialkyl phosphites or diphenylphosphine oxide to the triple bond of dialkyl acetylenedicarboxylate may result in mono- and/or bisadducts. The ratio of the products may be influenced by the molar ratio of the reactants and the conditions (temperature of microwave irradiation and reaction time). Stereospecific (3)J(PP) couplings were utilized in the assignments to the meso and racemic forms of the bisadducts. The bis(dialkylphosphonyl)-succinates were formed as a mixture of the corresponding meso form and racemate, while bis(diphenylphosphinoyl)-succinate was obtained as a racemate. The P-31-(CH)-C-12-(CH)-C-13-P-31 spin system of bis(dialkylphosphonyl)-succinates was subjected to a detailed NMR analysis supported by simulation.
Item Type: | Article |
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Uncontrolled Keywords: | ACETYLENES; ALKYLATION; ESTERIFICATION; BISPHOSPHONATES; ACIDS; DERIVATIVES; Michael addition; EFFICIENT SYNTHESIS; Kabachnik-Fields reaction; CHELATE PLATINUM COMPLEXES; microwave; addition; diphenylphosphine oxide; Dialkyl phosphite; Dialkyl acetylenedicarboxylate |
Subjects: | Q Science / természettudomány > QD Chemistry / kémia |
SWORD Depositor: | MTMT SWORD |
Depositing User: | MTMT SWORD |
Date Deposited: | 13 Feb 2015 11:07 |
Last Modified: | 13 Feb 2015 11:07 |
URI: | http://real.mtak.hu/id/eprint/21709 |
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