NOVEL COMPOUNDS HAVING INDAZOLE FRAMEWORKS, METHODS FOR PREPARING THE SAME AND PHARMACEUTICAL COMPOSITION COMPRISING THE SAME
申请人:Kim Jeom-Yong
公开号:US20100256133A1
公开(公告)日:2010-10-07
Novel compounds having indazole frameworks, as well as a method for preparing the same and a pharmaceutical composition comprising the same are provided. The compounds of the present invention can inhibit protein kinase activity and thus the pharmaceutical composition of the present invention can be used to prevent or treat diseases or disorders which are related to protein kinase activity.
Mechanochemical Synthesis of 1,2,4‐Triazoles via a [3+2] Cycloaddition of Azinium‐
<i>N</i>
‐Imines and Nitriles
作者:Baofu Zhu、Wen Li、Haixin Chen、Minjian Wu、Jijing Hu、Hua Cao、Xiang Liu
DOI:10.1002/adsc.202200463
日期:2022.9.6
We report here a mechanochemical Cu-catalyzed [3+2] cycloaddition of azinium-N-imines with nitriles under solventless grinding conditions. Various 1,2,4-triazolos derivatives were obtained in 51–80% yields. The developed protocol offers advantages in functional-group compatibility, scalability, no use of solvents, shorter reaction time, and without external heating. In addition, heterocyclic N-imines
我们在此报告了在无溶剂研磨条件下机械化学 Cu 催化的 [3+2] 氮鎓-N-亚胺与腈的环加成反应。以 51-80% 的收率获得了各种 1,2,4-三唑衍生物。开发的协议在官能团兼容性、可扩展性、不使用溶剂、反应时间更短以及无需外部加热等方面具有优势。此外,杂环N-亚胺如喹啉鎓和异喹啉鎓盐也是合适的底物,从而产生1,2,4-三唑并[1,5- a ]喹啉和1,2,4-三唑并[5,1 - a ] 异喹啉衍生物在机械化学条件下。
Divergent Synthesis of F- and CF<sub>3</sub>-Containing N-Fused Heterocycles Enabled by Fragmentation Cycloaddition of β-CF<sub>3</sub>-1,3-Enynes with N-Aminopyridiniums Ylides
作者:Xiaotian Shi、Qiong Wang、Zhiqing Tang、Huilin Huang、Tongxin Cao、Hua Cao、Xiang Liu
DOI:10.1021/acs.orglett.4c00088
日期:2024.2.16
The two novel cyclization modes of β-CF3-1,3-enynes are presented herein for the divergent construction of F- and CF3-containing N-fused heterocycles. Fluorinated pyrazolo[1,5-a]pyridines were afforded from β-CF3-1,3-enynes with N-aminopyridiniums ylides via detrifluoromethylative [2 + 3] cyclizations, followed by fluorine transfer from a CF3 unit. Whereas reaction with N-aminoisoquinoliniums ylides
本文提出了β-CF 3 -1,3-烯炔的两种新环化模式,用于含F-和CF 3的N-稠合杂环的不同构建。氟化吡唑并[1,5- a ]吡啶由β-CF 3 -1,3-烯炔与N-氨基吡啶鎓叶立德通过脱三氟甲基化[2 + 3]环化得到,然后从CF 3单元进行氟转移。而与N-氨基异喹啉鎓叶立德的反应通过前所未有的断裂[3+2]-环加成得到CF 3 -取代的吡咯并[2,1- a ]异喹啉。此外,通过氟化杂环的进一步衍生化证明了克级实验和合成实用性。
N-Iminopyridinium Compounds in Giese Reaction: Photoinduced Homolytic N–N and C–C Bond Cleavage for Cyanoalkyl Radical Generation
作者:Gyuri Han、Jihyun You、Junhyeon Choi、Eun Joo Kang
DOI:10.1021/acs.orglett.4c00565
日期:2024.3.29
photoinduced cyanoalkyl radical addition methodology using N-iminopyridinium reagents derived from cyclic ketones. Mechanistic investigations reveal the association of the excited Hantzsch ester and iminopyridinium with pyridyl radical generation. The ensuing cascade involving homolytic N–N bond and C–C bondcleavage of the pyridyl radical ultimately leads to the formation of cyanoalkyl radical species, leading
Synthesis of 2-fluorinated pyrazolo[1,5-a]pyridines via base- mediated [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes
作者:Yang Feng、Yuanyuan Wu、Zengjiang Yue、Ying Fu、Zhengyin Du
DOI:10.1039/d4nj02150a
日期:——
2-fluoropyrazolo[1,5-a]pyridines through base-promoted [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes has been established. A range of N-heterocycles with 2-fluorinated pyrazo[1,5-a]pyridines were efficiently obtained in moderate to good yields. The impact of different substituents on the reaction was discussed in detail. The protocol shows great potential for the synthesis of valuable