|
Accession number;99A0308700
|
| Title;The First Isolable Silatriafulvene Derivative. |
| Author;
SAKAMOTO K
(Tohoku Univ., Sendai)
OGASAWARA J
(Tohoku Univ., Sendai)
SUNAGAWA T
(Tohoku Univ., Sendai)
KIRA M
(Tohoku Univ., Sendai)
TAKAHASHI M
(Inst. Physical And Chemical Res.(riken), Sendai)
VESZPREMI T
(Inst. Physical And Chemical Res.(riken), Sendai)
|
Journal Title;Abstr Symp Organomet Chem Jpn
|
Journal Code:L0853A
|
ISSN:
|
|
VOL.45th;NO.;PAGE.14-15(1998)
|
| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;English |
| Abstract;A reaction of tris(t-butyldimethylsilyl)silyllithium with di-t-butylcyclopropenone gave 1,2-di-t-butyl-4,4-bis(t-butyldimethylsilyl)-4-silatriafulvene 1 as air and moisture sensitive yellow crystals. A significantly high field shift of the unsaturated silicon(.DELTA.Si=-72ppm) in 29Si NMR indicates the substantial contribution of a zwitterionic resonance structure containing cyclopropenium ion and silyl anion. Thermolysis of 1 at 70.DEG.C. results in isomerization to the corresponding silacyclobutadiene derivative, which is trapped by t-butyl alcohol. (author abst.) |
|
|
|
Related Articles;
|
