Speicherung des labilen Silaethens Me2Si=C(SiMe3)2 mit N-Trimethylsilyl-benzophenonimin Ph2C=NSiMe3 / Storing of the Labile Silaethene Me2Si=C(SiMe3)2 with N-Trimethylsilyl-benzophenoneimine Ph2C=NSiMe3
Year: 1987
Type: article
Abstract: 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 [2+4]- and [2+2]-cycloadduct (2, 3), respectively. Above 60 °C (above 120 °C) 2 or 3 by the way of 1 transform into a 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 [2 + 4]-cycloadduct (75%) and an ene reaction product (25%). The rate constants of the first order decomposition of 2 or 3 in the presence of dmb (80 °C. solvents like Et2O, Q6H6 are in the order of 2x10-4s-1 (τ1/2ca. 1 h) and 3x10- 5s-1 (τ1/2 ca. 6 h). respectively.
Source: Zeitschrift für Naturforschung B
Authors: Nils Wiberg, G. Preiner, G. Wagner, H. Köpf, G. Fischer
Institution: Ludwig-Maximilians-Universität München
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,712
OpenAlex ID: W2055459285