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Transformations of 3-methyl-2-azafluorene involving the methyl and methylene groups

โœ Scribed by N. S. Prostakov; L. A. Gaivoronskaya; G. Alvarado Urbina; L. M. Kirillova; S. A. Soldatova; A. A. Savina; Mauricio Belei dos Santos


Book ID
112380276
Publisher
Springer US
Year
1978
Tongue
English
Weight
250 KB
Volume
14
Category
Article
ISSN
0009-3122

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โœ Eric M. Gordon; Christopher M. Cimarusti ๐Ÿ“‚ Article ๐Ÿ“… 1977 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 219 KB

Methylene cephams are useful synthetic intermediates for the preparation of semisynthetic cephalosporin antibiotics."' A recent paper by Maki and Sake" reports on the photocyclisation of 4-heterocyclic dithioazetidinones to 3-methylene cephams. We have independently investigated similar transformati