PDF herunterladen
Synlett 1992; 1992(4): 354-356
DOI: 10.1055/s-1992-22013
letter
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

A Novel Synthesis of Hemispherands

Ryszard Ostaszewski* , Willem Verboom, David N. Reinhoudt
  • *Laboratory of Organic Chemistry, University of Twente, P.O. Box 217, NL-7500 AE Enschede, The Netherlands
Weitere Informationen

Publikationsverlauf

Publikationsdatum:
08. März 2002 (online)

 als PDF herunterladen  Lizenzen und Reprints Alle Artikel dieser Rubrik
Preview

A novel, flexible synthesis of hemispherands {2,5,8-trioxa[9](3,3″) m-terphenylophanes 5a-d} with different central aromatic groups is described. The key step comprises the introduction of the central aromatic ring in the last step of the synthesis via a Suzuki cross-coupling reaction using palladium tetrakis(triplienylphosphine) as a catalyst and sodium or potassium cations serving as a template ion in the macrocyclization.