1,5-Diaza-2,6-diborabicyclo[3.3.0]octadienes: Products of the Reactions of Trihaloboranes with Ketazines

Autor:	Thomas Groh, G. Elter, and Hans-Georg Schmidt, Mathias Noltemeyer, Anton Meller
Rok vydání:	2000
Předmět:	Inorganic Chemistry 010405 organic chemistry Stereochemistry Chemistry Organic Chemistry Nuclear magnetic resonance spectroscopy Crystal structure Physical and Theoretical Chemistry 010402 general chemistry 01 natural sciences Medicinal chemistry 3. Good health 0104 chemical sciences
Zdroj:	Organometallics. 19:2477-2481
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om0001164
Popis:	The 1,5-diazonia-2,6-diboratabicyclo[3.3.0]octa-18,4-dienes 1−4 were prepared from dilithiated ketazines and trihaloboranes, BX3 (X = F, Cl, Br, I). Upon elimination of HX the corresponding 1,5-diaza-2,6-diborabicyclo[3.3.0]octa-3,7-dienes were formed and compounds 5 and 6 (X = Cl, Br) were isolated. Treatment of 5 with MeLi and tBuOLi, respectively, gave 10 and 11. Monocyclic 1,2,3-azaazoniaborata-5-cyclopentenes (7−9: X = F, Cl, Br) resulted from monolithiated ketazines and BX3. The compounds were characterized by NMR spectroscopy (1H, 11B, 13C, 19F), MS, and elemental analyses (CH). X-ray crystal structure determinations are presented for 1−4 and 11.
Databáze:	OpenAIRE
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