کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1254236 | 971359 | 2014 | 6 صفحه PDF | دانلود رایگان |
A general, mild and efficient protocol for the synthesis of ethyl 4-methyl-2-(thiophen)-2,5-dihydro-1,5-benzodiazepine-3-carboxylate is achieved for first time using H3PMo12O40 in ethanol at 0 °C by a one-pot, three-component condensation of various thiophene aldehydes, substituted o-phenylenediamines and ethyl acetoacetate. Compared with the conventional synthesis method, this procedure has the advantages of convenient operation, excellent yields, and environmentally benign. A plausible formation mechanism has been proposed. The structure of the products is characterized by 1H NMR, IR, MS and elemental analysis.
A general, mild and efficient protocol for the synthesis of ethyl 4-methyl-2-(thiophen)-2,5-dihydro-1,5-benzodiazepine-3-carboxylate was achieved for first time using H3PMo12O40 in ethanol at 0 °C by a one-pot, three-component condensation of various thiophene aldehydes, substituted o-phenylenediamines and ethyl acetoacetate and is reported. This procedure has the advantages of convenient operation, excellent yields, and environmentally benign.Figure optionsDownload as PowerPoint slide
Journal: Chinese Chemical Letters - Volume 25, Issue 2, February 2014, Pages 327–332