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Synlett 1994; 1994(11): 916-918
DOI: 10.1055/s-1994-23047
DOI: 10.1055/s-1994-23047
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.
Medium Size Ether Ring Formation of C-Alkynylated Sugars via Dicobalthexacarbonyl Complexes
Further Information
Publication History
Publication Date:
22 March 2002 (online)
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Four C-alkynylated compounds at the C-1 position of D-glucal were converted into the corresponding dicobalthexacarbonyl complexes, which recyclized upon treatment with acid to form the medium size (7, 8, 9 and 10 membered) rings. Decomplexation was difficult under the usual oxidative condition, but it successfully worked under reductive condition in the presence of rhodium catalyst under high pressure hydrogen atmosphere.