15  5,763,671  16  2-t-butyl-4-methoxypbenyl(3,3’-di-t-butyl-5,5’-dimethoxy-l,1’-bipbenyl- 2,2’-<liyl)phosphite  having  the  fonnula:  methyl(3,3’-di-t-butyl-5,5’-dimethoxy-1,1’-biphenyl-2,2’-diyl)pbosphite  having  the  fommla:  6,6’-[[4,4’-bis(l,1-dimethylethyl)-[l,1’-binaphthyl)-2,2’-diyl]bis(oxy)]bis› dibeozo[d,f][l,3,2]-dioxaphosphepin  havins  the  fonnula:  C-CHJ  I  \  CH3  CH3  0  \  P-0-CHJ  I  0  C-CH3  I  \  CHJ  CH)  (CHJ)3C  0  0  \/  p  I  0  LigandC  Li,gandB  Ligand  A 