80431-45-4Relevant articles and documents
Storing of the Labile Silaethene Me2Si=C(SiMe3)2 with N-Trimethylsilyl-benzophenoneimine Ph2C=NSiMe3
Wiberg, Nils,Preiner, G.,Wagner, G.,Koepf, H.,Fischer, G.
, p. 1055 - 1061 (2007/10/02)
N-Trimethylsilyl-benzophenoneimine Ph2C=NSiMe3 is able to "store" the silaethene Me2Si=C(SiMe3)2 (1), produced from Me2SiF-CLi(SiMe3)2, under formation of a - and -cycloadduct (2, 3), respectively.Above 60 deg C (above 120 deg C) 2 or 3 by the way of 1 transform into 1:5 mixture of 2 and 3 (into a 1:1 mixture of the dimer of 1 and the insertion product of 1 into the SiN-bond of Ph2C=NSiMe3).In the presence of 2,3-dimethyl-1,3-butadiene (dmb), 2 or 3 form by way of the reaction of the intermediate 1 with dmb a -cycloadduct (75percent) and an ene reaction product (25percent).The rate constants of the first order decomposition of 2 or 3 in the presence of dmb (80 deg C, solvents like Et2O, C6H6) are in the order of 2 E-4 s-1 (τ1/2 ca. 1 h) and 3 E-5 s-1 (τ1/2 ca. 6 h), respectively. - Key words: Silaethene Me2Si=C(SiMe3)2, Ph2C=NSiMe3-adduct, Kinetic Studies
Reaktivitaet des Silaethens Me2Si=C(SiMe3)2: Thermolyse von (Me3Si)2(Me2XSi)CLi (X z. B. (PhO)2PO2) in Anwesenheit von Silaethen-Faengern
Wiberg, Nils,Preiner, Gerhard,Schieda, Oswald
, p. 3518 - 3532 (2007/10/02)
Silaethene Me2Si=C(SiMe3)2 (1), generated as a reaction intermediate by the thermal elimination of LiX from Me2XSi-CLi(SiMe3)2, combines with the reactants a - b (e. g.Me3Si-Cl, Me3Si-OMe) with insertion in the a - b bond, with a = b - c - H (e. g.CH2=CMe
