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ChemInform Abstract: 1,3-Dipolar Cycloadditions of 2-Thio-3-chloroacrylamides with Diazoalkanes.

✍ Scribed by Marie Kissane; Simon E. Lawrence; Anita R. Maguire

Publisher
John Wiley and Sons
Year
2010
Weight
54 KB
Volume
41
Category
Article
ISSN
0931-7597

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✍ Pitlik, János ;Csaba Jászberényi, J. ;Komáromi, István 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 346 KB

## Abstract The 2‐methylenecephalosporins 1 undergo stereoselective 1,3‐dipolar cycloaddition reactions with diazoalkanes to give exclusively the spirocyclopropylcephalosporins 3. Substituens at C‐3, C‐4 and C‐7 of the cephalosporin nucleus do not display a significant effect on the reactivity of t