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Lookup NU author(s): Dr Simon DohertyORCiD,
Dr Julian Knight,
Dr Ross Harrington,
Emeritus Professor Bill CleggORCiD
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(Chemical Equation Presented) Rhodium-catalyzed double [2 + 2 + 2] cycloaddition of 1,4-bis(diphenylphosphinoyl)buta-1,3-diyne with tethered diynes provides a straightforward, single-pot procedure for the synthesis of a new class of tropos biaryl diphosphine, NU-BIPHEP. This methodology represents a significant improvement on existing multistep procedures. Enantiopure Lewis acid platinum complexes of these diphosphines are highly efficient catalysts for carbonyl-ene and Diels-Alder reactions, and ruthenium diphosphine-diamine complexes catalyze the asymmetric reduction of ketones to give ee's that rival those obtained with their BINAP counterpart. © 2007 American Chemical Society.
Author(s): Doherty S, Knight JG, Smyth CH, Harrington RW, Clegg W
Publication type: Letter
Publication status: Published
Journal: Organic Letters
ISSN (print): 1523-7060
ISSN (electronic): 1523-7052