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Intramolekulare Diels-Alder-Reaktion vom Typ 2: Synthese und Chemie von Brückenkopf-Alkenen

✍ Scribed by Brian R. Bear; Steven M. Sparks; Kenneth J. Shea

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
615 KB
Volume
113
Category
Article
ISSN
0044-8249

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✍ Vratislav Kvita; Hanspeter Sauter; Grete Rihs 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 German ⚖ 435 KB

The nucleophilic attack of substituted anilines at position 6 of methyl coumalate **(1)** opens the α‐pyrone ring to form 4‐arylamino‐3‐(methoxycarbonyl)butadien‐1‐carboxylic acid **2** __(Scheme 1).__ The latter are easily decarboxylated at room temperature in polar aprotic solvents to 1‐arylamino‐