[2 + 2] cycloadditions of 2,2-bis(trifluoromethyl)ethylene-1,1-dicarbonitrile with vinyl sulfides and ketene S,S-acetals
作者:Reinhard Brückner、Rolf Huisgen
DOI:10.1016/0040-4039(90)80125-6
日期:1990.1
In its [2+2] cycloadditions to vinyl sulfides, the title olefin (BTF) exceeds tetracyanoethylene up to 8200-fold in rate, but is more sensitive to steric hindrance by β-substituents in the donor olefin; some vinyl sulfides react faster than vinylethers with BTF. The dependence of rate on solvent polarity Is In harmony with zwitterionic Intermediates.
The Lithium Diisopropylamide-induced Fragmentation of 1,3-Dithiolane Derivatives of Several Ketones Having α-Hydrogen
作者:Hideyuki Ikehira、Shigeo Tanimoto、Tatsuo Oida
DOI:10.1246/bcsj.56.2537
日期:1983.8
The reaction of 1,3-dithiolane derivatives of ketones having α-hydrogen with lithium diisopropylamide results in fragmentation to the corresponding thioketone followed by further conversion in a few steps to the other intermediate species which, on trapping with alkyl halide, leads to a vinylic sulfide and/or a sulfide bearing a secondary alkyl group.
Atom-Economic Synthesis of Tris[2-(organylthio)ethyl]phosphine Oxides from Phosphine and Vinyl Sulfides
作者:Nina K. Gusarova、Nina I. Ivanova、Maria V. Bogdanova、Lidiya M. Sinegovskaya、Alexander V. Gusarov、Boris A. Trofimov
DOI:10.1080/104265090885345
日期:2005.7.1
Abstract Phosphine, generated from elemental phosphorus in the system KOH-toluene-H2O, reacts with vinyl sulfides under free radical conditions (AIBN, dioxane, 65–70°C, atmospheric pressure) to form regiospecifically tris[2-(organylthio)ethyl]phosphines, which are readily oxidized in air to corresponding tris[2-(organylthio)ethyl]phosphine oxides.
Hydrophosphorylation of vinyl sulfides with elemental phosphorus in the KOH/DMSO(H<sub>2</sub>O) system: synthesis of 2-alkyl(aryl)thioethylphosphinic acids
作者:B. A. Trofimov、A. V. Artem’ev、N. K. Gusarova、A. O. Sutyrina、S. F. Malysheva、L. A. Oparina
DOI:10.1080/17415993.2017.1395027
日期:2018.1.2
ABSTRACT Elemental phosphorus (red or white) reacts with alkyl and aryl vinyl sulfides in the superbase system KOH/DMSO(H2O) at 75–120°C for 2–3 h to afford 2-alkyl(aryl)thioethylphosphinic acids in a yield of up to 31%. GRAPHICAL ABSTRACT
Hydrophosphination of Vinyl Sulfides and Vinyl Selenides: First Examples
作者:Nina K. Gusarova、Boris A. Trofimov、Svetlana F. Malysheva、Nina I. Ivanova、Boris G. Sukhov、Natal’ya A. Belogorlova、Vladimir A. Kuimov
DOI:10.1055/s-2002-34852
日期:——
The first examples of the hydrophosphination of alkyl vinyl sulfides and selenides are described. The reaction of secondary phosphines (R 1 ) 2 PH 1-3 with vinyl chalcogenides CH 2 =CHXR 2 4-9 proceeds readily under radical initiation to give in anti-Markovnikov mode regiospecifically the corresponding organylchalcogenophosphines (R 1 ) 2 PCH 2 CH 2 XR 2 10a-h in high yields.