in methanol byproducts: N2, HCl; addn. of the isocyanide to the Re compd. in MeOH and refluxing for 2 h; concn. (vac.), addn. of Et2O and petroleum ether and recrystn. from CH2Cl2-Et2O;

in tetrahydrofuran byproducts: N2; addn. of the isocyanide to the Re compd. in THF and stirring for 2 h at room temp.; filtn., concn. (vac.), addn. of CH2Cl2 or THF, then Et2O, filtn., washing with Et2O and drying in vac.; elem. anal.;

in tetrahydrofuran byproducts: N2; addn. of the isocyanide to the Re compd. in THF and stirring for 2 h at room temp.; filtn., concn. (vac.), addn. of CH2Cl2 or THF, then Et2O, filtn., washing with Et2O and drying in vac.; elem. anal.;