Bridged bioxepines and bi[10]paracyclophanes - Synthesis and absolute configuration of a bi[10]paracyclophane with two chiral planes and one chiral axis
Bringmann G., Harmsen S., Schupp O., Walter R. Werner H., Sundermeyer J. Stereoselective Reactions of Metal-Activated Molecules. 1995;137-142 Vieweg, Braunschweig.
Part of this work was published as a preliminary communication: For the present full paper, the conformational studies have now been extended using an inital Random-Search algorithm providing improved data on the conformational behavior (like more minimum structures and better energies), leading to the same overall result, in particular to the same attribution of the absolute configuration, showing that the computational effort of the initial investigation had been entirely sufficient
Part of this work was published as a preliminary communication: Tochtermann W., Kuckling D., Meints C., Kraus J., Bringmann G. Tetrahedron: Asymmetry. 10:1999;21-24. For the present full paper, the conformational studies have now been extended using an inital Random-Search algorithm providing improved data on the conformational behavior (like more minimum structures and better energies), leading to the same overall result, in particular to the same attribution of the absolute configuration, showing that the computational effort of the initial investigation had been entirely sufficient.
X-Ray structural analyses of related compounds have also been published: (a) Peters K., Peters E.-M., Karl B., Tochtermann W. Z. Kristallogr., NCS. 212:1997;369-370 (b) Peters K., Peters E.-M., Kuckling D., Tochtermann W. Z. Kristallogr., NCS. 213:1998;97-98.
X-Ray structural analyses of related compounds have also been published: (a)
X-Ray structural analyses of related compounds have also been published: (a) Peters K., Peters E.-M., Karl B., Tochtermann W. Z. Kristallogr., NCS. 212:1997;369-370 (b) Peters K., Peters E.-M., Kuckling D., Tochtermann W. Z. Kristallogr., NCS. 213:1998;97-98.
Recently, optically active and inactive rotamers of a bitriptycyl derivative were isolated that were configurationally stable because of hindered internal rotation around the central single bond:
Recently, optically active and inactive rotamers of a bitriptycyl derivative were isolated that were configurationally stable because of hindered internal rotation around the central single bond: Toyota S., Nakagawa T., Kotani M., Oki M., Uekusa H., Ohashi Y. Tetrahedron. 58:2002;10345-10351.
Program Package DBZDO/MCDSPD, Department of Chemistry and Biochemistry, University of Colorado, Boulder, USA, modified by Fleischhauer, J.; Schleker, W.; Kramer, B. Ported to LinuX by Gulden, K.-P.
Downing, J.W., Program Package DBZDO/MCDSPD, Department of Chemistry and Biochemistry, University of Colorado, Boulder, USA, modified by Fleischhauer, J.; Schleker, W.; Kramer, B. Ported to LinuX by Gulden, K.-P.