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Synthesis 2000; 2000(7): 985-989
DOI: 10.1055/s-2000-6300
DOI: 10.1055/s-2000-6300
paper
© 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.
First Example of a Total Axial to Centered Chirality Transfer in the [2 + 2 + 2] Cycloadditions of Allenediynes
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
![](https://www.thieme-connect.de/media/synthesis/200007/lookinside/thumbnails/10.1055-s-2000-6300-1.jpg)
The cobalt-mediated [2 + 2 + 2] cycloaddition of allenediynes bearing a phosphine oxide group at one alkyne terminus is a completely regio-, chemo- and diastereoselective high yielding process. Moreover, a total transfer of chiral information from axial to centered chirality is evident, which makes this reaction a new and powerful tool for the preparation of enantiomerically enriched tricyclic derivatives.
alkynes - allenes - chirality - cycloadditions - cobalt