232. L. Palais, I.S. Mikhel, C. Bournaud, L. Micouin, C.A. Falciola, M. Vuagnoux-d'Augustin, S. Rosset, G. Bernardinelli, A. Alexakis,
     “SimplePhos monodentate ligands: Synthesis and application in copper-catalysed reactions”
     Angew. Chem. Int. Ed. 2007, 46, 7462-7465.

A simple choice: Ligands termed SimplePhos (L*), based on a chiral amino and flexible aryl groups on the phosphorus atom, induce high enantioselectivity in the copper-catalyzed conjugate addition and allylic substitution of dialkyl zinc and trialkyl aluminum reagents (see scheme; CuTC=copper thiophene carboxylate).

DOI : 10.1002/anie.200702186 

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