Synthesis of Dihalo-Substituted Analogues of Tröger’s Base from ortho- and meta-Substituted Anilines
作者:Anna Hansson、Jacob Jensen、Ola F. Wendt、Kenneth Wärnmark
DOI:10.1002/ejoc.200300144
日期:2003.8
dihalo-substituted analogues of Trogersbase. By using paraformaldehyde and TFA, yields of 2-85% of these potential supramolecular building blocks were obtained. Even the inconceivable achievement of condensing anilines unsubstituted in para-position to analogues of Trogersbase was successful. Adding our present results to our previous, makes it now possible to synthesize analogues of Trogersbase halo-substituted
Abstract Eleven different derivatives of Tröger’s base were synthesized and successfully resolved by (recycling) HPLC on chiral stationary (S,S)-Whelk-O1 or CHIRALPAK IA phase on a (semi-) preparative scale or synthesized in enantiomerically pure form. The absoluteconfiguration was determined by X-ray crystal structure analysis, comparison of the quantum chemically calculated circular dichroism spectra
Synthesis of enantiomerically pure Tröger's base derivatives via chiral disulfoxides
作者:Pavol Ondrisek、Rino Schwenk、Ján Cvengroš
DOI:10.1039/c4cc03963g
日期:——
The preparation, full characterization and determination of the absolute configuration of diastereomericallypure disulfoxide derivatives of Troger's base are described. A sulfinyl-lithium exchange followed by the reaction with electrophiles affords synthetically meaningful amounts of enantiomerically pure 4,10-disubstituted Troger's base analogues without any erosion of the stereogenic information