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Zirconium-Mediated Imine Metathesis. Synthesis of 2,4-Diaza-1-zirconiacyclobutanes and the Mechanism of Their Reactions with Imines and Alkynes

✍ Scribed by Meyer, Karen E.; Walsh, Patrick J.; Bergman, Robert G.


Book ID
125505141
Publisher
American Chemical Society
Year
1994
Tongue
English
Weight
254 KB
Volume
116
Category
Article
ISSN
0002-7863

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[2+2] Cycloaddition Reactions of Imines
✍ Giuseppe Cremonesi; Piero Dalla Croce; Concetta La Rosa 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 190 KB

## Abstract Unsymmetric cyclic ketenes were generated from __N__‐acyl‐1,3‐thiazolidine‐2‐carboxylic acids **1a**–**c** by means of __Mukaiyama__'s reagent, and then reacted with imines **2a**–**c** to the new, isomeric spiro‐__β__‐lactams **3** and **4** __via__ [2+2] cycloaddition (__Staudinger__