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Easy Access to N-Aryl, N-Heteroarylbenzoxazolinones and 4-Aza Analogues via Diels—Alder Cycloaddition Reactions.

✍ Scribed by Franck Lepifre; Christophe Buon; Pierre-Yves Roger; Pascal Bouyssou; Gerard Coudert


Publisher
John Wiley and Sons
Year
2005
Weight
28 KB
Volume
36
Category
Article
ISSN
0931-7597

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✦ Synopsis


Abstract

For Abstract see ChemInform Abstract in Full Text.


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✍ Suryakanta Dalai; Vladimir N. Belov; Shamil Nizamov; Karsten Rauch; Dirk Finsing 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 246 KB

## Abstract Under basic conditions (Et~3~N, dioxane), the aromatic amidines **4** and also __S__‐methylisothiourea **4g** cleanly undergo Michael addition to methyl 2‐chloro‐2‐cyclopropylideneacetate (**5**), followed by intramolecular nucleophilic substitution, cyclopropyl to cyclobutyl ring enlar