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Synthesis of mercury mercaptide azetidinones via 2- and 4-methylthio-substituted cephalosporins

โœ Scribed by Slusarchyk, W. A.; Applegate, H. E.; Cimarusti, C. M.; Dolfini, J. E.; Funke, P.; Puar, M.

Book ID
126818751
Publisher
American Chemical Society
Year
1978
Tongue
English
Weight
674 KB
Volume
100
Category
Article
ISSN
0002-7863

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Silver Mediated Cyclizations of 4-Alleny
Silver Mediated Cyclizations of 4-Allenyl-and 4-(2-Propynyl)azetidinones. A Stereoselective Synthesis of 3-Substituted ฮ”1-Carbapenems Via N-C3 Closure.
โœ J.Siva Prasad; Lanny S. Liebeskind ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 306 KB

A silver catalyzed cyclixation of 4-allenylazetidinones to Akarbapenems and of 4-(2-propynyl)axetidinones to Akubapenems is described. The silver mediated cyclixation is stereospecific: starting with stereodefined 4-allenylaz&idinones, specific stereoisomers of C-3 substituted Al-carbapenems can be