[image omitted] An efficient and environmentally friendly synthesis of 6-amino-5-cyano-1,4-dihydropyridine derivatives was developed by the one-pot reaction of ethyl acetoacetate, [(2-aryl)methylene]malononitriles, and ammonium acetate at room temperature with grinding. The key advantages are the short reaction times, good yields, simple workup, and easy purification. The present method does not involve any hazardous solvent.
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Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R ChinaTongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China
Peng, Fang-le
Li, Fu-lin
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Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China
China Univ Min & Technol, Sch Mech & Civil Engn, Jiangsu 221116, Peoples R ChinaTongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China
Li, Fu-lin
Tan, Yong
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Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R ChinaTongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China