2-Alkyl-5-imino-1-benzopyrano[3,4-c]pyridin-4(3H,5H)-ones and related compounds from reaction of 3-carbamoyl-2-iminochromens with methyl ketones
作者:Conor N. O'Callaghan
DOI:10.1039/p19810002273
日期:——
The base-catalysed condensation of 3-carbamoyl-2-iminochromens with methylketones yields 2-alkyl-5-imino-1-benzopyrano[3,4-c]pyridin-4(3H,5H)-ones, 2-alkyl-1-benzopyrano[3,4-c]pyridin-4(3H),5-diones, and 3-cyano-4-(2-hydroxyphenyl)-6-methyl-3,4-dihydropyridin-2-ones (which exist in two tautomeric forms).
3-氨基甲酰基-2-亚氨基色氨酸与甲基酮的碱催化缩合反应生成2-烷基-5-亚氨基-1-苯并吡喃并[3,4- c ]吡啶-4(3 H,5 H)-ones,2-烷基-1-苯并吡喃并[3,4- c ]吡啶-4(3 H),5-二酮和3-氰基-4-(2-羟基苯基)-6-甲基-3,4-二氢吡啶-2-酮(以两种互变异构形式存在)。
O'Callaghan, Conor N.; McMurry, T. Brian H.; O'Brien, John E., Journal of the Chemical Society. Perkin Transactions 2 (2001), 1998, # 2, p. 425 - 429
作者:O'Callaghan, Conor N.、McMurry, T. Brian H.、O'Brien, John E.
DOI:——
日期:——
O CALLAGHAN, C. N., J. CHEM. SOC. PERKIN TRANS., 1981, N 8, 2273-2276
作者:O CALLAGHAN, C. N.
DOI:——
日期:——
New HA 14-1 analogues: synthesis of 2-amino-4-cyano-4H-chromenes
作者:Leila Moafi、Somayeh Ahadi、Ayoob Bazgir
DOI:10.1016/j.tetlet.2010.09.090
日期:2010.12
The synthesis of 2-amino-4-cyano-4H-chromene derivatives as new HA 14-1 analogues by a simple and efficient method is reported. In addition, the reaction of 2-amino-2H-chromene-3-carbonitriles, salicylaldehydes and amines results in the formation of new chromeno[2,3-d]pyrimidine derivatives.
据报道,通过一种简单而有效的方法合成了2-氨基-4-氰基-4 H-色烯衍生物作为新的HA 14-1类似物。此外,2-氨基-2 H-亚甲基-3-腈,水杨醛和胺类的反应导致形成新的苯并[2,3- d ]嘧啶衍生物。
Recyclization of 2-Imino-2<i>H</i>-1-benzopyrans with Nucleophilic Reagents - Reaction of 2-Iminocoumarin-3-carboxamides with 2-Aminothiophene-3-carboxamides
作者:Sergiy M. Kovalenko、Sergiy V. Vlasov、Valentin P. Chernykh
DOI:10.1055/s-2006-926333
日期:——
In the course of our research on the synthesis of coumarins, the interaction of 2-iminocoumarin-3-carboxamides with a series of 2-aminothiophene-3-carboxamides was studied. It was established that the initial products - 2-substituted coumarin-3-carboxamides - can undergo rearrangement to 2-(coumarin-3-yl)thieno[2,3-d]pyrimidin-4-ones by refluxing in DMF.