191980-58-2Relevant academic research and scientific papers
Rhodium/chiral diene complexes in the catalytic asymmetric arylation of β-pyrazol-1-yl acrylates
Gopula, Balraj,Tsai, Yun-Fan,Kuo, Ting-Shen,Wu, Ping-Yu,Henschke, Julian P.,Wu, Hsyueh-Liang
supporting information, p. 1142 - 1145 (2015/03/14)
The asymmetric conjugate addition of arylboronic acids to substituted and unsubstituted β-pyrazol-1-yl (E)-tert-butyl acrylates 4 catalyzed by 5 mol % of the Rh(I)/diene 2a catalyst provided the corresponding addition products in 44-98% yield and 91->99.5
Synthesis of 4-arylpyrazoles via PdCl2(dppf)-catalyzed cross coupling reaction with Grignard reagents
Ichikawa, Hayato,Ohno, Yuuki,Usami, Yoshihide,Arimoto, Masao
, p. 2247 - 2252 (2007/10/03)
4-Aryl-l-tritylpyrazoles were prepared from the cross coupling reaction of aryl Grignard reagents with 4-bromo-1-tritylpyrazoles in the presence of 0.2 mol% PdCl2(dppf) as catalyst. To deprotect the trityl group, 4-phenyl-l-tritylpyrazole was r
Palladium(0)-catalyzed preparation of 4-arylpyrazoles
Elguero, Jose?,Jaramillo, Carlos,Pardo, Carmen
, p. 563 - 566 (2007/10/03)
A general method for the palladium(0)-catalyzed preparation of 4- arylpyrazoles 2, by coupling of either 4-halopyrazoles 3 with arylstannanes 4 or 4-tributylstannyl-1-tritylpyrazole 5 with aryl iodides 6, is reported. Deprotection of trityl and/or methyl
