Divergent synthesis of new naphtho-fused 2-aminoindolines and naphthoxindoles based on straightforward construction of phenanthrene
An environmentally friendly, highly atom-economical and operationally simple approach toward the synthesis of naphtho-fused 2-aminoindolines and naphthoxindoles starting from biaryl aldehydes and secondary amines has been developed. This notable methodology integrates consecutive intramolecular Mann...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co. Ltd.
2025-02-01
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| Series: | Green Synthesis and Catalysis |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666554923000832 |
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| Summary: | An environmentally friendly, highly atom-economical and operationally simple approach toward the synthesis of naphtho-fused 2-aminoindolines and naphthoxindoles starting from biaryl aldehydes and secondary amines has been developed. This notable methodology integrates consecutive intramolecular Mannich-type cyclization triggered by the dearomatization of indole with subsequent aromatization via β-elimination and then amination or oxidation at the C2-position of the indole nucleus. The secondary amine-controlled divergent protocol together with an easy product isolation process provides a practical route for the first time to access naphtho-fused 2-substituted indoline. |
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| ISSN: | 2666-5549 |