Domino reaction of arylglyoxals with pyrazol-5-amines: selective access to pyrazolo-fused 1,7-naphthyridines, 1,3-diazocanes, and pyrroles.
Domino reaction of arylglyoxals with pyrazol-5-amines: selective access to pyrazolo-fused 1,7-naphthyridines, 1,3-diazocanes, and pyrroles.
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芳基乙二醛与吡唑-5-胺的多米诺反应:选择性获得吡唑并稠合的 1,7-萘啶、1,3-重氮烷和吡咯
DOI:
10.1021/jo500823z
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发表时间:
2014-06-06
期刊:
影响因子:
--
通讯作者:
Li G
中科院分区:
文献类型:
--
作者:
Jiang B;Fan W;Sun MY;Ye Q;Wang SL;Tu SJ;Li G
New multicomponent domino reactions of arylglyoxals with pyrazol-5-amines have been established, providing selective access to unprecedented pyrazolo-fused 1,7-naphthyridines, 1,3-diazocanes, and pyrroles (up to 52 examples). The unreported dipyrazolo-fused 1,7-naphthyridines were regioselectively synthesized through a special double [3 + 2 + 1] heteroannulation accompanied by direct C–C formation between two electrophilic sites of arylglyoxals. The unusual [3 + 3 + 1 + 1] cyclization resulted in 20 examples of novel dipyrazolo-fused 1,3-diazocanes, whereas pyrrolo[2,3-c]pyrazoles were obtained in good yields by varying arylglyoxals 1 and pyrazol-5-amines 2 in the ratio 1:2. Mechanisms of formation of these three new types of heterocycles are also proposed.
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影响因子:
7.3
作者:
Natsugari, H;Ikeura, Y;Doi, T
通讯作者:
Doi, T
影响因子:
5.2
作者:
Lancefield, Christopher S.;Zhou, Linna;Westwood, Nicholas J.
通讯作者:
Westwood, Nicholas J.
DOI:
10.1039/c1cc15913e
发表时间:
2012-01-21
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
作者:
Jiang B;Yi MS;Shi F;Tu SJ;Pindi S;McDowell P;Li G
通讯作者:
Li G
影响因子:
15
作者:
BAUMGARTEN, HE;KRIEGER, AL
通讯作者:
KRIEGER, AL
影响因子:
2.1
作者:
Ho, Tse-Lok;Lin, Qi-xian
通讯作者:
Lin, Qi-xian