N-phosphyl derivatives of 2-t-butyl-1,3,2-diazaboracycloalkane ring system
New mono- and disubstituted 2-t-butyl-1,3,2-diazaboracycloalkane, EN(CH2)nE'NBtBu derivatives, [n = 3, E = H = E' (I), n = 2, E = E' = H (II), n = 3, E = H, E' = tBuPCl (III), E' = tBuPOCH2CF3 (IV), E' = Me2PNSiMe3 (V), E' = tBuPNMe2 (VI), E = SiMe3, E' = tBuPCl (VII), E' = OCH2CF3 (VIII), E = Me2SiH, E' = tBuPNMe2 (IX), n = 2, E = H, E' = tBuPCl (X), E' = tBuPNMe2 (XI), E = Me3Si, E' = tBuPCl (XII)], have been synthesized in good yield and characterized by spectroscopic and elemental analysis. 1H, 13C and 31P NMR spectral data are analyzed and discussed.
(Received April 11, 2000; revised July 1, 2000)
Bull. Chem. Soc. Ethiop. 2000, 14(2), 123-128
Bulletin of the Chemical Society of Ethiopia. ISSN: 1011-3924