magnesium hydride; zirconium tetraiodide in tetrahydrofuran 2 h; Heatingdiff. catalysts and without catalyst, standard pressure; Product distribution;

in tetrahydrofuran; n-heptane a soln. of SnCl4 (18 mmol) in heptane was added dropwise within 10 min to a soln. of (C8H17)2Mg (44 mmol) in THF with stirring (pptn.); the mixt. was refluxed for 3 1/3 h, then treated with H2O and 10percent HCl;; the org. layer was separated and dried with CaCl2, the solvents were distilled off in vac., the residue was istilled in high vac.; 99.1percent purity (asdetermined by gas chromy.); identified by mass spectrometry; elem. anal.;;

phosphorus trichoride; iron (III) acetylacetonate in tetrahydrofuran; n-heptane 0.5 h; Heating;

ammonium chloride; iron (III) acetylacetonate 1.) THF, rt, 2 h; Yield given. Multistep reaction;

sulfuric acid; oxygen 1.) toluene, 0-5 deg C; Yield given. Multistep reaction;

water

ammonium chloride; iron (III) acetylacetonate 1.) THF, rt, 1 h; Yield given. Multistep reaction;

ammonium chloride; iron (III) acetylacetonate 1.) THF, rt, 3 h; Yield given. Multistep reaction;

in tetrahydrofuran 1.) rt, 1 h, 2.) 50 deg C, 1 h;

in tetrahydrofuran