Threophos

Other addition reactions Additions involving carbon Copper(I) chloride, 85 Lithium bis(dimethylphenyl-silyl)cuprate, 161 Manganese(III) acetate, 171 Mercury(II) chloride, 175 2-(Phenylseleno)acrylonitrile, 244 Threophos, 298 Additions involving nitrogen Benzeneselenenyl halides, 26 Additions involving oxygen Bis(Tj5-cyclooctadienyl)ruthe-nium(II), 35... 

Bis[2,2 -bis(diphenylphosphine)-l,l -binaphthyl] (tetrachloro) (triethyl-amine) diruthenium, 36 Bis( 1,5-cyclooctadiene)nickel(0)-Di-ethylaluminum chloride-Threophos, 298... 

In further investigations, AMPP ligands derived from linear amino acids and several 3,l,2-oxazaphosphabicyclo[3.3.0]octanes (derived from proline) were used for the same cy-clodimerization reaction catalyzed by bis(l,5-cyclooctadiene)nickel(0). Optical yields were as high as 26% if (2R,3/ )-Threophos, an aminophosphane-diphosphinite ligand derived from threonine, was used58 63. 

Amino acids with further hydroxy functions, such as threonine, give triphosphorylated derivatives, such as Threophos 6864,70, by the same technique. 

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