1,1 -Binaphthalene-2,2 -diyl phosphites

The smaller p -tert-butyl-calix [4] arenes have a rich coordination chemistry as well (65). Of these, however, only the upper-rim modified calixarenes seem to support metal complexes with confined binding sites (66), except in those cases where the lower-rim substituents form an appended cavity. Thus, Matt and coworkers have reported (67) a pocket-shaped calix[4]arene ligand L2 bearing two lower-rim [([Pg.410]

BINAPHOS (R)-2-(diphenylphosphino)-l,l -binaphthalene-2 -yl (S)-l,l -binaphthalene-2,2 -diyl phosphite)... 

An almost isotactic material has been obtained in CH2CI2 with the palladium catalyst [Pd(Me)(NCMe)((R,S)-BINAPHOS)]BAr4 (Ar = 3,5-bis(trifluoromethyl)phe-nyl) containing the unsymmetrical chiral bidentate phosphine-phosphite (i, S)-BI-NAPHOS = [(R)-2-(diphenylphosphino)-(S)-l,l -binaphthalene-2,2 -diyl phosphite]... 

The enantioselectivity in the acylpalladation of propene (and of labeled 1-do-decene) has been studied in a similar [ (/ ,5)-BINAPHOS Pd(COCH3)(S)](X) system, where (/ ,5)-BINAPHOS is (/ )-2-diphenylphosphino-l,r-binaphtalen-2 -yi-(5)-l,l -binaphthalene-2,2 -diyl-phosphite (Scheme In spite of the fact that, in this... 

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