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Spiropyrans based on nitrogen heterocycles

✍ Scribed by V. P. Martynova; N. E. Shelepin; N. S. Loseva; É. R. Zakhs; L. E. Nivorozhkin; V. I. Minkin; L. S. Éfros


Book ID
112327409
Publisher
Springer US
Year
1971
Tongue
English
Weight
283 KB
Volume
7
Category
Article
ISSN
0009-3122

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Synthesis of nitrogen heterocycles based
✍ Sergio Kreimerman; Ilhyong Ryu; Satoshi Minakata; Mitsuo Komatsu 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 168 KB

Combining atom transfer carbonylations of bifunctional amines with an appropriate choice of cyclization conditions enables the preparation of nitrogen-containing heterocycles via the incorporation of carbon monoxide. © 2001 Académie des sciences / Éditions scientifiques et médicales Elsevier SAS ato

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Allenylamides of Boc-protected a-aminoacids easily gave in basic medium heterocyclic products arising from attack of the NH group on the inside C-C double bond of the 1,2-diene moiety, namely imidazolidinones, pyrazinones, and a pyrrole compound. The microwave-assisted heterocyclization occurred cle