1153-06-6Relevant articles and documents
Hypercoordinated eka-tin materials with dangling aryl-methoxy and -methylthio ligands exhibiting intramolecular secondary bonding and aryl bond stabilization in reactions with organotin chlorides
Arias-Ugarte, Renzo,Metta-Maga?a, Alejandro J.,Ornelas, Alfredo,Pannell, Keith H.,Sharma, Hemant K.
, p. 16084 - 16091 (2021/11/27)
The syntheses of [2-(CH3ECH2)C6H4]PbPh3-nCln, (n = 0, E = O (4), E = S (5); n = 1, E = O (6), E = S (7); n = 2, E = O (8), are described. NMR and single crystal data illustrate significant Pb?E interactions increasing as n progresses from 0 to 2. The Pb?E interactions stabilize the Pb-aryl bonding to the extent that the reactions of 4 and 5 with Me2SnCl2 result in interchange of a Ph group and Cl to produce 6 and 7, respectively, together with Me2PhSnCl. This journal is
Synthesis, properties and application of electronically-tuned tetraarylarsonium salts as phase transfer catalysts (PTC) for the synthesis of gem-difluorocyclopropanes
Grudzień, Krzysztof,Basak, Tymoteusz,Barbasiewicz, Micha?,Wojciechowski, Tomasz M.,Fedoryński, Micha?
supporting information, p. 106 - 110 (2017/04/11)
Preparation of gem-difluorocyclopropane from α-methylstyrene and chlorodifluoromethane was investigated under basic two-phase conditions. Although simple tetraalkylammonium salts appeared uneffective as phase-transfer catalysts (PTC) for this purpose, tetraphenylarsonium chloride displayed moderate activity, and inspired studies of the phenomena. To improve its efficiency we synthesized set of electronically-tuned tetraarylarsonium analogues. Their preparation revealed interesting exchange process of aryl substituents on the arsonium center, whereas activity studies demonstrated a correlation of catalytic efficiency with electronic effects of the substituents. Two of the tetraarylarsonium catalysts were characterized by X-ray studies.
Versatile reagent Ph3As(OTf)2: One-pot synthesis of [P7(AsPh3)3][OTf]3 from PCl3
Donath, Maximilian,Bodensteiner, Michael,Weigand, Jan J.
supporting information, p. 17306 - 17310 (2015/02/19)
Compound Ph3As(OTf)2 as a pentacoordinated AsV Lewis acid readily forms dicationic Lewis acid/base ad-ducts upon addition of various Lewis bases. It also represents a stronger chloride-abstracting agent than Me3SiOTf and facilitates the reductive coupling of PCl3 in the presence of AsPh3 to the unprecedented cation [P7(AsPh3)3]3+ as triflate salt. This crystallographically characterized nor-tricyclane-type cation represents a P7R3-derivative with the most electron-withdrawing substituents, resulting in a pronounced effect on the structural parameters of the P7 core.
