Activation of B-H bonds by an oxo-rhenium complex

resumo

The isolation and structural characterization by X-ray diffraction of (PPh3)(2)(O)(I) Re(H)OBcat 1 and (PPh(3))(2)(O)-(I)Re(H)OBpin 2 from the reaction of ReIO(2)(PPh(3))(2) with the boranes catecholborane (HBcat) and pinacolborane (HBpin) unequivocally shows the first example of activation of B-H bond by a high valent oxo-rhenium complex.

palavras-chave

CATALYTIC HYDROSILYLATION; SYSTEM SILANE/MOO2CL2; CARBONYL-COMPOUNDS; REDUCTION; SULFOXIDES; MECHANISM; MOO2CL2; ALDEHYDES; KETONES; OXIDES

categoria

Chemistry

autores

Fernandes, AC; Fernandes, JA; Paz, FAA; Romao, CC

nossos autores

agradecimentos

This research was supported by FCT through project PTDC/QUI/71741/2006. J.A. Fernandes thanks FCT for a postdoctoral grant (SFRH/BPD/23461/2005). The authors also wish to thanks FCT for funding towards the purchase of the single-crystal diffractometer. We wish to acknowledge Maria da Conceicao Almeida and Dr Ana Coelho for providing elemental analysis and mass spectrometry at their services in ITQB.

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