tricyclohexylphosphine in acetone (N2 or Ar); added a soln. of P-compound to a soln. of Pd-complex; evapd. after 15 min; added n-hexane; filtered; cooled for 2 h at -78°C; pptd.; filtered; dried in vacuo;

in methanol byproducts: B(C6H5)3, benzene; (N2 or Ar); soln. of B-compound dropped into soln. of Pd-complex; pptd. after 0.5 h; allowed to stand for 2 h at room temp. and for 2 h at -78°C; filtered; dried in vacuo; IR, NMR;

in methanol (N2 or Ar); dropped a soln. of B-compound into a soln. of Pd-complex; pptd. after 0.5 h; allowed to stand for 2 h at room temp. and for 2 h at -78°C; filtered; dried in vacuo; IR, NMR;