Organic letters

A ring fragmentation approach to medium-sized cyclic 2-alkynones

NP Tsvetkov, A Bayir, S Schneider, M Brewer

Index: Bulic, Bruno; Luecking, Ulrich; Pfaltz, Andreas Synlett, 2006 , # 7 p. 1031 - 1034

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Citation Number: 9

Abstract

... Subsequent intramolecular aldol-type cyclization to form the 7-membered ring failed in the presence of DBU and KOH in methanol, but diazo compound 19a did provide the expected cis- and trans-fused bicycles 20a and 21a in 44 ... 1. Greve , B.; Imming , P.; Laufer , S. Angew. ...