Aluminium as an Electron Pool for Organic Synthesis - Multi-Metal Redox Promoted Reactions

Author(s): Hideo Tanaka, Manabu Kuroboshi

Journal Name: Current Organic Chemistry

Volume 8 , Issue 11 , 2004

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Aluminum (Al) is an ideal reducing agent (electron pool) since it is cheap, easy to handle, able to release enough electron (3 e- / atom), and environment friendly. However, the use of Al in organic synthesis is rather limited owing to lack of efficient electron transfer process between Al and organic substances. In last decay, we and some other groups developed multi-redox promoted reactions using Al as a terminal reductant in which Al act as an electron pool and a catalytic amount of metal salt(s) works as a mediator for electron transfer from Al to substrates. Indeed, various combinations of Al and metal salt(s), e.g., Al / PbBr2, Al / PbBr2 / AlBr3, Al / NiCl2 / CrCl2, Al / PbBr2 / TFA, Al / PbBr2 / NiCl2(bpy), etc., have been developed to promote carbon-carbon bond formation as well as highly selective functionalization. Further more, these multi-redox promoted reactions have been successfully utilized for the synthesis of useful compounds, such as β-lactam antibiotics and β-lactamase inhibitors. This review article will summarize the recent progress in the multi-metal redox promoted reactions using Al as an electron pool and their applications to organic synthesis.

Keywords: electron pool, Aluminum

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Article Details

Year: 2004
Page: [1027 - 1056]
Pages: 30
DOI: 10.2174/1385272043370320
Price: $58

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