The 15N–29Si spin–spincouplingconstants in silylamines have been measured from 29Si satellites in their natural abundance 15N n.m.r. spectra in an INEPT sequence for accumulation of signals and interpreted in terms of Fermi-contact interaction; the sensitivity of 1J(15N–29Si) to dπ–pπ bonding was noted.
Palladium nanoparticles supported on graphene as catalysts for the dehydrogenative coupling of hydrosilanes and amines
作者:Juan F. Blandez、Iván Esteve-Adell、Mercedes Alvaro、Hermenegildo García
DOI:10.1039/c4cy01486c
日期:——
NPs) or nickel nanoparticles (Ni NPs) supported on G did not promote the formation of the corresponding Si–N coupling product. It was found that Pd/G performed better for this coupling than analogous catalysts, in which Pd NPs were supported on active carbon, multiwallcarbonnanotubes or diamond NPs. Pd/G as a catalyst has a wide substrate scope, including aliphatic and aromatic amines and mono or dihydrosilanes
Catalytic dehydrogenative Si–N coupling of pyrroles, indoles, carbazoles as well as anilines with hydrosilanes without added base
作者:C. David F. Königs、Maria F. Müller、Nuria Aiguabella、Hendrik F. T. Klare、Martin Oestreich
DOI:10.1039/c3cc38900f
日期:——
A base-free, catalytic protocol for the dehydrogenative Si-N coupling of weakly nucleophilic N-H groups of heteroarenes or aryl-substituted amines with equimolar amounts of hydrosilanes is reported. Cooperative Si-H bond activation at a Ru-S bond generates a silicon electrophile that forms a Si-N bond prior to the N-H deprotonation by an intermediate Ru-H complex, only releasing H(2).
Hydroxyapatite‐supportedgoldnanoparticles (Au/HAP) can act as a highly active and reusable catalyst for the coupling of hydrosilanes with amines under mild conditions. Various silylamines can be selectively obtained from diverse combinations of equimolar amounts of hydrosilanes with amines including less reactive bulky hydrosilanes. This study also highlights the applicability of Au/HAP to the selective
The [RuHCl(CO)(PCy3)2]-catalyzed N-silylation of primary and secondary amines with substituted vinylsilanes leads to the formation of a Si–N bond with the evolution of olefin.