-
An Improved Procedure for the Preparation of Substituted Thiazoles
作者:Maria Teresa Cocco、Valentina Onnis
DOI:10.1055/s-1993-25827
日期:——
The reaction between 3-amino-3-(dialkylamino)propenenitriles 1 and sodium thiocyanate in presence of bromine, provides an efficient route for the synthesis of 2-amino-5-cyano-4-(dialkylamino)thiazoles 3.
在
溴存在下,3-
氨基-3-(二烷基
氨基)
丙烯腈 1 与
硫氰酸钠发生反应,为合成 2-
氨基-5-
氰基-4-(二烷基
氨基)
噻唑 3 提供了一条有效途径。
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Synthesis of Some New 2(1<i>H</i>)-Pyridones from 3-Amino-3-(dialkylamino)propenenitriles
作者:Maria Teresa Cocco、Cenzo Congiu、Antonio Maccioni、Valentina Onnis
DOI:10.1055/s-1992-26113
日期:——
3-Amino-3-(dialkylamino)propenenitriles were reacted with acetylenecarboxylates to give 2(1H)-pyridone derivatives. The reaction with ethyl propynate afforded dienamino ester intermediates which cyclized in sodium ethoxide/ethanol to 5-cyano-2(1H)-pyridone. The reaction with diethyl acetylenedicarboxylate gave directly the 2(1H)-pyridone derivatives.
3-
氨基-3-(二烷基
氨基)
丙烯腈与
乙炔羧酸酯反应,得到2(1H)-
吡啶酮衍
生物。与
乙炔丙酸乙酯反应,得到二烯
氨基酯中间体,在
乙醇钠/
乙醇中环化为5-
氰基-2(1H)-
吡啶酮。与
乙炔二
羧酸二
乙酯反应,直接得到2(1H)-
吡啶酮衍
生物。
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Cocco; Congiu; Maccioni, Il Farmaco, 1994, vol. 49, # 2, p. 137 - 140
作者:Cocco、Congiu、Maccioni、Onnis、Schivo、De Logu
DOI:——
日期:——
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Cocco, Maria Teresa; Congiu, Cenzo; Onnis, Valentina, Heterocycles, 1993, vol. 36, # 12, p. 2829 - 2838
作者:Cocco, Maria Teresa、Congiu, Cenzo、Onnis, Valentina
DOI:——
日期:——
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Cocco, Maria Teresa; Congiu, Cenzo; Maccioni, Antonio, Journal of Heterocyclic Chemistry, 1994, vol. 31, # 2, p. 329 - 334
作者:Cocco, Maria Teresa、Congiu, Cenzo、Maccioni, Antonio、Onnis, Valentina
DOI:——
日期:——