First Gewald reaction ignited by sodium polysulfide: greener ultrasound-promoted synthesis of substituted 2-aminothiophenes in the absence of catalyst
2013 ◽
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pp. 458-463
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1997 ◽
Vol 119
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pp. 7901-7902
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1981 ◽
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pp. 1-6
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pp. 683-690
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Keyword(s):
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Vol 58
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pp. 1408-1412
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