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Reactivity of intramolecularly coordinated aluminum compounds to R3EOH (E = Sn, Si). Remarkable migration of N,C,N and O,C,O pincer ligands
Authors: Dostál Libor | Jambor Roman | Růžička Aleš | Jirásko Robert | Císařová Ivana | Holeček Jaroslav
Year: 2006
Type of publication: článek v odborném periodiku
Name of source: Journal of Organometallic Chemistry
Page from-to: 35-44
Titles:
Language Name Abstract Keywords
cze Reaktivita intramolekulárně koordinovaných organohlinitých sloučenin s R3EOH (E = Sn, Si). Remarkable migration of N,C,N and O,C,O pincer ligands The reaction of organoaluminum compounds containing O,C,O or N,C,N chelating (so called pincer) ligands [2,6-(YCH2)(2)C6H3]-(AlBu2)-Bu-i (Y = MeO 1, (BuO)-Bu-t 2, Me2N 3) with R3SnOH (R = Ph or Me) gives tetraorganotin complexes [2,6-(YCH2)(2)C6H3]SnR3 (Y = MeO, R = Ph 4, Y = MeO, R = Me 5; Y = (BuO)-Bu-t, R = Ph 6, Y = (BuO)-Bu-t, R = Me 7; Y = Me2N, R = Ph 8, Y = Me2N, R = Me 9) as the result of migration of O,C,O or N,C,N pincer ligands from aluminum to tin atom. Reaction of 1 and 2 with ((Bu3Sn)-Bu-n)(2)O proceeded in similar fashion resulting in 10 and 11 ([2,6-(YCH2)(2)C6H3](SnBu3)-Bu-n, Y = MeO 10; Y = (BuO)-Bu-t 11) in mixture with (Bu3SnBu)-Bu-n-Bu-i. The reaction I and 3 with 2 equiv. of Ph3SiOH followed another reaction path and ([2,6-(YCH2)(2)C6H3]Al(OSiPh3)(2), Y = MeO 12, Me2N 13) were observed as the products of alkane elimination. The organotin derivatives 4-11 were characterized by the help of elemental analysis, ESI-MS technique, H-1, C-13, Sn-119 NMR spectroscopy and in the case 6 and 8 by single crystal X-ray diffraction (XRD). Compounds 12 and 13 were identified using elemental analysis, H-1, C-13, Si-29 NMR and IR spectroscopy.
eng Reactivity of intramolecularly coordinated aluminum compounds to R3EOH (E = Sn, Si). Remarkable migration of N,C,N and O,C,O pincer ligands The reaction of organoaluminum compounds containing O,C,O or N,C,N chelating (so called pincer) ligands [2,6-(YCH2)(2)C6H3]-(AlBu2)-Bu-i (Y = MeO 1, (BuO)-Bu-t 2, Me2N 3) with R3SnOH (R = Ph or Me) gives tetraorganotin complexes [2,6-(YCH2)(2)C6H3]SnR3 (Y = MeO, R = Ph 4, Y = MeO, R = Me 5; Y = (BuO)-Bu-t, R = Ph 6, Y = (BuO)-Bu-t, R = Me 7; Y = Me2N, R = Ph 8, Y = Me2N, R = Me 9) as the result of migration of O,C,O or N,C,N pincer ligands from aluminum to tin atom. Reaction of 1 and 2 with ((Bu3Sn)-Bu-n)(2)O proceeded in similar fashion resulting in 10 and 11 ([2,6-(YCH2)(2)C6H3](SnBu3)-Bu-n, Y = MeO 10; Y = (BuO)-Bu-t 11) in mixture with (Bu3SnBu)-Bu-n-Bu-i. The reaction I and 3 with 2 equiv. of Ph3SiOH followed another reaction path and ([2,6-(YCH2)(2)C6H3]Al(OSiPh3)(2), Y = MeO 12, Me2N 13) were observed as the products of alkane elimination. The organotin derivatives 4-11 were characterized by the help of elemental analysis, ESI-MS technique, H-1, C-13, Sn-119 NMR spectroscopy and in the case 6 and 8 by single crystal X-ray diffraction (XRD). Compounds 12 and 13 were identified using elemental analysis, H-1, C-13, Si-29 NMR and IR spectroscopy. aluminum; tin; silicon; chelating ligand; transmetallation

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