Ein neues 1,3,5,7-Tetraaza-2,4,6,8-tetrasilabicyclo[4.2.0]octan

✍ Scribed by Skoda, Lutz ;Klingebiel, Uwe ;Meller, Anton

• Publisher: Wiley (John Wiley & Sons)
• Year: 1980
• Tongue: English
• Weight: 328 KB
• Volume: 113
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19801130703

✦ Synopsis

The reaction of mono-and dilithio-2,2,4,4,6,6-hexamethylcyclotrisilazane (1, 2) with aminofluorosilanes R -SiF,-NR'SiMe, (R = F, Me; R' = CMe,, SiMe,) leads to LiF elimination and format'ion of the cyclotrisilazanes 3 -5. The cyclodisilazane 6 is obtained by ring contraction in the reaction of compound 5 with butyllithium and F3SiN(CMe3)(SiMe,). The lithium salt of 5 forms the novel title compound 7 by an intramolecular reaction with LiF-elimination, silyl group and methanide ion migration. Another bicyclic compound 8 is obtained in the reaction of 2 with C,H,Li and F,SiMeN(SiMe,),. The reaction mechanism is discussed.