catalyst: piperidine; H2 in neat (no solvent) mixt. frozen with liq. nitrogen (Ar), react. vessel evacuated, filled with H2 (323K or 273K, 4 h, color change from brown to deep red); mixt. of diastereomers in a ratio 4.5:1 (at 273K) or 2:1 (at 323K); solvent removed (vac.), residue redissolved (pentane), filtered (Al2O3, room temp., Ar), crystd. (193K); elem. anal.;
Haaijman; Wibaut
Recueil des Travaux Chimiques des Pays-Bas, 1941 , vol. 60, p. 842,859, 864
Full Text Show Details
Wibaut; Haaijman
Science (Washington, DC, United States), 1941 , vol. 94, p. 49
