bis(η3-allyl-μ-chloropalladium(II)) in tetrahydrofuran addn. of Bu4NF in THF to mixture of pyrimidine deriv., Bu6Sn2 and Pd-catalyst (N2-stream); stirring at ambiente temp. for 4h; GLC-monitoring; addn. of EtOAc; washing (water); flash chromy. (silica; hexane/EtOAc 1:1); distn.;

in tetrahydrofuran addn. of pyrimidine deriv. in THF to stannyl-THF soln. at -78°C while stirring (N2); after 10h quenching with NH4Cl soln.; extn. (EtOAc); washing, drying; flash chromy. (silica; hexane/EtOAc 1:1); distn.;

in tetrahydrofuran addn. of pyrimidine deriv. in THF to stannyl-THF soln. at -78°C while stirring (N2); after 10h quenching with NH4Cl soln.; extn. (EtOAc); washing, drying; flash chromy. (silica; hexane/EtOAc 1:1); distn.;