Recyclization of 2-imino-2h-1-benzopyrans under the influence of nucleophilic reagents. 1. New approach to the synthesis of 3-(1,3,4oxadi-, thiadi-, and triazolyl-2)coumarins
Synthesis of New Substituted Pyridopyrazolotriazines
作者:M. A. Metwally、E. Abdel-Galil、A. Metwally、F. A. Amer
DOI:10.1007/s10593-012-1101-4
日期:2012.10
4-b]pyridine derivatives. The diazonium chlorides react with N'-acyl-2-cyanoaceto-hydrazide derivatives to give the corresponding 3-hydrazonopyrazolopyridine derivatives. The latter affords the corresponding 3-hydrazonopyrazolo[3,4-b]pyridine derivatives on reflux in acetic acid. Diazo coupling of 2,4-dimethylpyrazolo[3,4-b]pyridinediazonium chloride with ketoester, e.g., ethylbenzoylacetate, is followed
Synthesis of Thiophenes, Azoles and Azines with Potential Biological Activity by Employing the Versatile Heterocyclic Precursor N-Benzoycyanoacetylhydrazine
作者:Rafat M. Mohareb、Jonathan Z. Ho、Fatma O. Alfarouk
DOI:10.1002/jccs.200700152
日期:2007.8
is concerned with the use of N-benzoyl cyanoacetylhydrazine (3) in synthesizing several new heterocyclic compounds with potentialbiologicalactivity, via its reaction with various chemical reagents. The synthesized derivatives have actually exhibited, upon screening, antibacterial and antifungal activities.
Hadi, Ali; Martin, Nazario; Seoane, Carlos, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 5, p. 1229 - 1235
作者:Hadi, Ali、Martin, Nazario、Seoane, Carlos、Soto, Jose L.、Albert, Armando、Cano, Felix
DOI:——
日期:——
First Synthesis of <i>N</i>‐Substituted Amino and <i>N</i>‐Sulfonylaminated Methylthiopyrimidines: Reaction of Dimethyl <i>N</i>‐Cyanodithioiminocarbonate With Substituted Hydrazides
作者:Galal H. Elgemeie、Soha A. Sood
DOI:10.1080/00397910500449427
日期:2006.4.1
A novel and efficient method for the synthesis of a new variety of methylsulfanylpyrimidines by the reaction of dimethyl N-cyanodithioiminocarbonate with substituted hydrazides. The synthetic potential of the method is demonstrated.