𝔖 Bobbio Scriptorium
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The reaction of a 1,2-disubstituted imidazole-4,5-dicarboxaldehyde with thio-, sulfinyl-, and sulfonyldiacetic acid methyl ester.

✍ Scribed by Erik F. Godefroi; Antoine Corvers; A. de Groot


Book ID
104236742
Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
113 KB
Volume
13
Category
Article
ISSN
0040-4039

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Azomethine ylides from the reaction of 4
✍ Metwally, Saoud A. M. ;Aly, Moustafa F. ;Abd-Alla, Mohamed A. ;Atta, Ferial M. ; 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 255 KB 👁 1 views

## Abstract 4‐(Dicyanomethylene)‐3‐methyl‐1‐phenyl‐2‐pyrazoline‐5‐one (1) readily reacts with α‐amino acids and their esters by Michael addition and subsequent elimination of HCN to the adducts 2a–k. One of these, 2i (obtained from methyl glycinate), adds stereoselectively to __N__‐phenylmaleimide