1158997-61-5Relevant articles and documents
Substrate-Controlled [5+1] Annulation of 5-Amino-1H-phenylpyrazoles with Alkenes: Divergent Synthesis of Multisubstituted 4,5-Dihydropyrazolo[1,5-a]quinazolines
Jiang, Xunyuan,Wei, Xiaoyi,Lin, Fei,Zhang, Zhixiang,Yao, Guangkai,Yang, Shuai,Zhao, Weijing,Zhao, Chen,Xu, Hanhong
supporting information, p. 3997 - 4003 (2020/06/17)
A new and efficient [5+1] annulation reaction for the first synthesis of 5,5-disubstituted 4,5-dihydropyrazolo[1,5-a]quinazolines is described. This transition-metal-free tandem cyclization was performed with 5-amino-1H-phenylpyrazole and readily availabl
Copper-catalyzed selective S-arylation of 1,2-bis(o-amino-1H-pyrazolyl) disulfides with arylboronic acids
Luo, Pei-Song,Wang, Feng,Li, Jin-Heng,Tang, Ri-Yuan,Zhong, Ping
experimental part, p. 921 - 928 (2009/10/14)
Copper-catalyzed oxidative S-arylation of 1,2-bis(o-amino-1H-pyrazolyl) disulfides with arylboronic acids for the synthesis of (o-amino-1H-pyrazolyl) aryl sulfides has been developed in the presence of CuI, 1,10-phenanthroline, and O2. A variet