tetrakis(triphenylphosphine) palladium(0) T=100°C; 20 h;

bis-triphenylphosphine-palladium(II) chloride in toluene T=100°C; 20 h; Yield given. Yields of byproduct given;

tetrakis(triphenylphosphine) palladium(0) T=100°C; 20 h;

bis-triphenylphosphine-palladium(II) chloride in toluene T=100°C; 20 h; Yields of byproduct given;

tetrakis(triphenylphosphine) palladium(0) T=100°C; 20 h;

bis-triphenylphosphine-palladium(II) chloride in toluene T=100°C; 20 h; Yields of byproduct given;

bis-triphenylphosphine-palladium(II) chloride in toluene T=100°C; 20 h; Yield given. Yields of byproduct given;

n-butyllithium in tetrahydrofuran; hexane to a stirred soln. of phosphonium-compd. in THF at 0°C is added a soln. of BuLi in hexane under N2, the mixt. is stirred at room temp. for 1 h and recooled to 0°C, addn. of Sn-compd. and the mixt. is stirred for 12 h, addn. of aq. NH4Cl; extraction with light petroleum, the extract is dried (MgSO4) and evaporated under reduced pressure, purifn. by column chromy. on silica gel (elution with pentane);

2-monochloropropane; magnesium in not given Bu3SnH added to soln. of Grignard reagent prepd. from i-PrCl and Mg, refluxed for an hour, cooled with ice bath, propanal added dropwise, further refuxed for an hour, treated with aq. NH4Cl; distn. under reduced pressure;

in diethyl ether aldehyde soln. adding dropwise to a soln. of Bu3SnMgCl, refluxing for 2 h, hydrolyzing with satd. NH4Cl, org. phase sepg. under inert atm., drying, solvent evapg.; purified by distn. in vacuo; IR, UV and NMR spectra;