Please use this identifier to cite or link to this item: https://doi.org/10.1021/om2012634
Title: Catalytic hydrosilylation of carbonyls via Re(CO) 5Cl photolysis
Authors: Toh, C.K.
Sum, Y.N.
Fong, W.K.
Ang, S.G. 
Fan, W.Y. 
Issue Date: 28-May-2012
Source: Toh, C.K., Sum, Y.N., Fong, W.K., Ang, S.G., Fan, W.Y. (2012-05-28). Catalytic hydrosilylation of carbonyls via Re(CO) 5Cl photolysis. Organometallics 31 (10) : 3880-3887. ScholarBank@NUS Repository. https://doi.org/10.1021/om2012634
Abstract: The hydrosilylation reaction between silanes and various carbonyl substrates such as aldehyde, ketone, ester, and carbonate has been catalyzed by Re(CO) 5Cl UV photolysis. Kinetic studies have shown that the reaction is favored for the least sterically hindered silanes with aldehydes followed by aliphatic ketones. The IR spectrum of the rhenium carbonyl dimer HRe 2(CO) 9(SiR 3) has been recorded in the reaction mixture. This complex is believed to be the resting state of the active catalyst Re(CO) 4SiR 3, which could be released upon photactivation. A catalytic mechanism involving this species has been proposed and shown to be thermodynamically feasible using computational studies. In addition, the relative hydrosilylation rates among the various carbonyl substrates can be explained using the same mechanism. © 2012 American Chemical Society.
Source Title: Organometallics
URI: http://scholarbank.nus.edu.sg/handle/10635/93242
ISSN: 02767333
DOI: 10.1021/om2012634
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