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3-Nitro-4-chlorocoumarin-dependent synthesis of carboxylic acid anhydrides

✍ Scribed by É. A. Parfënov; L. D. Smirnov

Publisher
Springer US
Year
1991
Tongue
English
Weight
83 KB
Volume
27
Category
Article
ISSN
0009-3122

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📜 SIMILAR VOLUMES

Coupled acylation of amines dependent on
Coupled acylation of amines dependent on 3-nitro-4-chlorocoumarin
✍ é. A. Parfenov; L. D. Smirnov 📂 Article 📅 1991 🏛 Springer US 🌐 English ⚖ 58 KB

We found that 3-nitro-4-chlorocoumarin (I) can be utilized for the acylation of primary and secondary amines with salts of carboxylic acids on a preparative scale.

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A convenient, regio-selective synthesis of novel 1-tert-butyl-4-nitro-1H-pyrrole-3-carboxylic acid was developed, utilizing the bulky tert-butyl moiety of 1-tert-butyl-1H-pyrrole to direct selective, un-symmetrical substitutions to the desired 3 and 4 positions.