Furfuryl vinyl ethers in [4+2]-cycloaddition reactions
作者:L. A. Oparina、O. V. Vysotskaya、A. V. Stepanov、I. A. Ushakov、K. A. Apartsin、N. K. Gusarova、B. A. Trofimov
DOI:10.1134/s1070428017020105
日期:2017.2
time [4+2]-cycloaddition reactions were carried out between furfuryl vinylethers and typical dienophiles and heterodienes proceeding in uncatalyzed conditions and resulting in previously unknown heterocyclic systems containing either free vinyloxy groups or furfuryl substituents. With maleic anhydride and maleimide furfuryl vinylethers afforded 1-(vinyloxyalkyl)tricyclodec-8-ene-3,5-diones in up to 72%
hydrophosphorylation reactions of vinyl ethers of a series of furans are reported. Regiospecific addition of secondaryphosphines, phosphinesulfides, or phosphine selenides to 2-[(vinyloxy)methyl]furan, 2-[1-(vinyloxy)butan-2-yl]furan, or 2-[(vinyloxy)methyl]tetrahydrofuran proceeds under UV irradiation to give the corresponding anti-Markovnikov adducts in 72-99% yield. ethers - phosphines - phosphorylation
Synthesis and conformational analysis of furfuryl vinyl ethers
作者:Yu. Yu. Rusakov、L. B. Krivdin、L. M. Sinegovskaya、N. V. Istomina、L. A. Oparina、A. V. Stepanov、B. A. Trofimov
DOI:10.1007/s11172-008-0289-z
日期:2008.10
Five furfuryl vinylethers were synthesized from the corresponding furfuryl alcohols and acetylene at high and atmospheric pressures in superbasic medium KOH-DMSO. On the example of 2-vinyloxymethylfuran and 2-vinyloxymethyltetrahydrofuran, their conformational structures have been studied by quantum chemistry methods, NMR and IR spectroscopy. In particular, from the results of the quantum-chemical