in tetrahydrofuran byproducts: ethylbenzene; High Pressure; H2-atmosphere (30 atm); 120°C, 4 h; filtration, evapn., dissoln. (CD2Cl2); NMR spectroscopy;

in THF-d8 (tetrahydrofuran-d8) Kinetics; byproducts: ethylbenzene (>99percent); High Pressure; H2-atmosphere (30 atm); heating at 70-120°C; not sepd.; NMR spectroscopy;

in tetrahydrofuran High Pressure; CO-atmosphere (30 atm); stirring at room temp. for 8 h; chromy. (SiO2, hexane, THF:hexane 1:1, THF), collection (filtration), washing, drying (N2-stream); elem. anal.;