Carbon-phosphorus heterocycles. A one-step synthesis of phosphindolines and phosphinolines. Cyclization of diphenylalkenylphosphine oxides with polyphosphoric acid
Intramolecular cationic cyclization of β-hydroxyalkylphosphine oxides—a route towards the benzophosphorinane core
作者:Katarzyna Włodarczyk、Marek Stankevič
DOI:10.1016/j.tet.2016.06.070
日期:2016.8
Intramolecular cationic cyclization of β-hydroxyalkylphosphine oxides in the presence of an acid lead to the formation of fused bicyclic compounds with an incorporated phosphorus atom. Depending on the structure of the starting compound the formation of either phosphaindane or benzophosphorinane oxides has been observed. The key difference in the reactivity arises from the substitution pattern at the
Selective reduction of allenyl(diphenyl)phosphine oxides to allyl(diphenyl)phosphine oxides
作者:S. V. Lozovskiy、M. I. Aleksandrova、A. V. Vasilyev
DOI:10.1134/s1070428017070065
日期:2017.7
The reduction of allenyl(diphenyl)phosphine oxides with HSiCl3 or LiAlH4 selectively afforded the corresponding allyl(diphenyl)phosphine oxides. 3-Methylbut-2-en-1-yl(diphenyl)phosphine oxide reacted with AlCl3 to give a mixture of 4,4-dimethyl-1-phenyl-1,2,3,4-tetrahydro-λ5-phosphinoline 1-oxide and 4,4-dimethyl-1-phenyl-1,4-dihydro-λ5-phosphinoline 1-oxide.
Carbon-phosphorus heterocycles. Synthesis of substituted 1,1'-(.alpha.,.omega.-alkanediyl)bis(1,2,3,4-tetrahydrophosphinolinium) salts. A single-crystal x-ray diffraction analysis of meso-1,1'-(1,2-ethanediyl)bis(1,2,3,4-tetrahydro-4,4-dimethyl-1-phenylphosphinolinium) diperchlorate
作者:Narayanasamy Gurusamy、K. Darrell Berlin、Dick Van der Helm、M. Bilayet Hossain