Synthesis of mononuclear heterocycles via electrophilic cyclization

Author(s):  
Mikhailo Slivka ◽  
Nataliya Korol
2019 ◽  
Vol 16 (6) ◽  
pp. 511-516
Author(s):  
Adnan Cetin

Efficient steps towards the synthesis of novel (phenyl)(1'-aryl-1,5,5'-triphenyl[3,3'-bi-1Hpyrazol]- 4-yl)methanones 4a-e were developed. The procedure starts from 1-(4-benzoyl-1,5-diphenyl- 1H-3-pyrazolyl)-3-phenyl-2-propyn-1-one (2) which was synthesized by a palladium catalyzed crosscoupling reaction. Compound 2 reacted with various hydrazines to give (E)-(phenyl)[1,5-diphenyl-3- [3-phenyl-1-(2-arylhydrazono)-2-propyn-1-yl]-1H-4-pyrazolyl]methanones E-3a-e. The bis-pyrazole derivatives 4a-e were synthesized from electrophilic cyclization reaction of α,β-acetylenic hydrazones E-3a-e and copper(I) iodide. All synthesized compounds were characterized by FT-IR, 1H, 13C NMR and Mass spectral analyses.


ChemInform ◽  
2012 ◽  
Vol 43 (45) ◽  
pp. no-no
Author(s):  
Weizhi Geng ◽  
Hanliu Wang ◽  
Zitao Wang ◽  
Shaoguang Zhang ◽  
Wen-Xiong Zhang ◽  
...  

Tetrahedron ◽  
2006 ◽  
Vol 62 (52) ◽  
pp. 12247-12251 ◽  
Author(s):  
Yoshinobu Morino ◽  
Ikumasa Hidaka ◽  
Yoji Oderaotoshi ◽  
Mitsuo Komatsu ◽  
Satoshi Minakata

ChemInform ◽  
2016 ◽  
Vol 47 (25) ◽  
Author(s):  
Natalia A. Danilkina ◽  
Larisa Y. Gurskaya ◽  
Aleksander V. Vasilyev ◽  
Irina A. Balova

2011 ◽  
Vol 76 (16) ◽  
pp. 6726-6742 ◽  
Author(s):  
Metin Zora ◽  
Arif Kivrak ◽  
Ceyda Yazici

ChemInform ◽  
1990 ◽  
Vol 21 (10) ◽  
Author(s):  
T. NINOI ◽  
Y. HASEGAWA ◽  
M. YOSHIHARA ◽  
T. MAESHIMA ◽  
M. FUJII ◽  
...  

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