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ChemInform Abstract: Synthesis of 2,4-Diaminopyrrolo[2,3-d]pyrimidines via Thermal Fischer Indolization. Pyrazole Formation with Ytterbium Triflate Catalysis.

✍ Scribed by Gordon L. Bundy; Theresa M. Schwartz; John R. Palmer; Lee S. Banitt; William Watt

Publisher
John Wiley and Sons
Year
2010
Weight
34 KB
Volume
32
Category
Article
ISSN
0931-7597

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Abstract

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Synthesis of 2,4-diaminopyrrolo[2,3-d]py
Synthesis of 2,4-diaminopyrrolo[2,3-d]pyrimidines via thermal fischer indolization. Pyrazole formation with ytterbium triflate catalysis
✍ Gordon L. Bundy; Theresa M. Schwartz; John R. Palmer; Lee S. Banitt; William Wat 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 515 KB

## Abstract The high‐yield synthesis of the 2,4‐diaminopyrrolo[2,3‐__d__] pyrimidine 4 (PNU‐87663) __via__ a Bischler‐like alkylation‐cyclization sequence was reported earlier. We describe herein an alternative synthesis of this potent antioxidant and several analogs based on the thermal Fischer in