The asymmetric rhodium catalyzed 1,4-addition of arylboronic acids to α,β-unsaturated carbonyl compounds also known as Hayashi Miyaura reaction is an important reaction for the asymmetric carbon-carbon bond formation. The reaction was first mentioned in 1997 and 1998 by Hayashi and Miyaura.[1,2]Through the preliminary studies of Hayashi, Carreira and Grützmacher, chiral diene ligands came forward as a new class of ligands in Rh- and Ir-catalysed reactions.
We were able to synthesize different tropane-derived phosphorus–olefin hybrid ligands 1 and disubstituted chiral diene ligands with pentalene as backbone 2 and could show successfully their application in the 1,4-addition of arylbronic acids to enones.[5,6] Therefore we are currently interested in the development of new chiral diene and phosphorous/olefin ligands and their area of applications.
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