From elusive thio- and selenosilanoic acids to copper(I) complexes with intermolecular Si=E -> Cu-O-Si coordination modes (E = S, Se)

Tan, GengwenXiong, YunInoue, ShigeyoshiEnthaler, StephanBlom, BurgertEpping, Jan D.Drieß, Matthias2016-06-242016-06-242013https://depositonce.tu-berlin.de/handle/11303/5650http://dx.doi.org/10.14279/depositonce-5270Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.The facile synthesis of the first stable selenosilanoic acid–base adduct LSi([double bond, length as m-dash]Se)OH(dmap) 3 (L = CH[C(Me)NAr]2, Ar = 2,6-iPr2C6H3, dmap = 4-dimethylaminopyridine), the heavier analogue of the thiosilanoic acid adduct LSi([double bond, length as m-dash]S)OH(dmap) 1, is reported. Both adducts 1 and 3 react readily with MesCu (Mes = 2,4,6-trimethylphenyl) to form the novel dimeric Cu(I) complexes [LSi([double bond, length as m-dash]E)OCu]2 (4: E = S; 5: E = Se) with unprecedented intermolecular Si[double bond, length as m-dash]E → Cu–O–Si coordination modes. The latter are efficient pre-catalysts for the Cu(I)-mediated aziridination of styrene with PhI[double bond, length as m-dash]N(Ts) (Ts = tosyl).en540 Chemie und zugeordnete WissenschaftenFrom elusive thio- and selenosilanoic acids to copper(I) complexes with intermolecular Si=E -> Cu-O-Si coordination modes (E = S, Se)Article1359-734523673422