Synthesis of Novel Pyridobenzimidazoles Bonded to Indoleorbenzo[b]thio-phenestructures

Sukanta Kamila; Haribabu Ankati; Kimberly Mendoza; Edward R. Biehl

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Synthesis of Novel Pyridobenzimidazoles Bonded to Indoleorbenzo[b]thio-phenestructures

机译：新型吲哚并苯并[b]硫代苯结构键合的吡啶并苯并咪唑的合成

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Pyridobenzimidazoles 6a-iwere synthesized in very good to excellent yields (81-96%) by the condensation of substituted N-phenyl-o-phenylenediamines 4a-d with indole/benzo[b]thiophene-3-aldehydes 5a-t inmethoxyethanol under reflux conditions. The diamines 4a-d were prepared byfirst treating 2-chloro-3-nitropyridine (1)with suitably substituted anilines 2a-d then reducing the resulting3-nitro-N-phenylpyridin-2-amines 3a-d with tin(II)chloride using microwave heating in each case.

机译：通过取代的N-苯基-邻-苯二胺4a-d与吲哚/苯并[b]噻吩-3-醛5a-t在甲氧基乙醇中的缩合反应，合成了吡啶并苯并咪唑类6a-i，收率非常好（81-96％）条件。首先通过用适当取代的苯胺2a-d处理2-氯-3-硝基吡啶（1），然后用氯化锡（II）还原生成的3-硝基-N-苯基吡啶-2-胺3a-d，制备二胺4a-d。分别采用微波加热。

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《The Open Organic Chemistry Journal》 |2011年第1期|共8页
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Sukanta Kamila; Haribabu Ankati; Kimberly Mendoza; Edward R. Biehl;
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Synthesis of Novel Pyridobenzimidazoles Bonded to Indoleorbenzo[b]thio-phenestructures

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