- Copper-Catalyzed Synthesis of 3-NO2 Quinolines from o-Azidobenzaldehyde and Nitro-olefins and its Application in the Concise Synthesis of Quindolines
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An efficient copper-catalyzed cyclization of o-azidobenzaldehyde and nitro-olefins was developed. This reaction proceeds under solvent-free conditions and displays broad functional group compatibility and affords 3-nitroquinolines in good to excellent yields. The synthetic utility of this strategy is illustrated by the concise construction of quindolines in only three steps, which renders the reaction more practical. (Figure presented.).
- Zheng, Lei,Zeng, Zhigang,Yan, Qiong,Jia, Fengcheng,Jia, Lihui,Chen, Yunfeng
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supporting information
p. 4037 - 4042
(2018/09/14)
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- Bifunctional acid-base ionic liquid for the one-pot synthesis of fine chemicals: Thioethers, 2H-chromenes and 2H-quinoline derivatives
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A bifunctional organocatalyst with ionic liquid properties and with an optimized distance between the acid and basic sites efficiently activates electron deficient olefins for 1,4 conjugated addition, which can be incorporated in different one-pot transformations for the preparation of cyclic and acyclic compounds of biological and synthetic interest. More specifically, the catalyst can be successfully applied for different carbon-carbon (CC) and carbon-heteroatom (C-N, C-O, C-S) bond forming reactions integrated in a cascade sequence. The activity of the organocatalyst has been compared with that of structurally related monofunctional and bifunctional catalysts. The most attractive features of this procedure are the high atom economy and the use of inexpensive starting materials as well as the use of an environmentally friendly catalyst that can be easily recovered due to its ionic liquid properties.
- Climent, Maria J.,Iborra, Sara,Sabater, Maria J.,Vidal, Juan D.
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