前所未有的Ru(II)催化的苯基吲唑酮与二芳基取代的炔烃和二烷基取代的炔烃的Csp 2 -H键活化和环化反应为构建全碳季中心吲哚[1,2- a ]提供了有效的途径喹唑啉酮和季碳中心的吲唑并[1,2- a ]吲唑酮。吲哚[1,2- a ]喹唑啉酮是通过Csp 2 -H活化,炔烃插入和1,2-苯基移位而形成的。吲唑[1,2一]是通过一个级联反应形成indazolones经由含有吲哚并形成环外双键[1,2一]喹唑啉酮。
Reducing-Agent-Free Convergent Synthesis of Hydroxyimino-Decorated Tetracyclic Fused Cinnolines via Rh<sup>III</sup>-Catalyzed Annulation Using Nitroolefins
作者:Pidiyara Karishma、Chikkagundagal K. Mahesha、Sanjay K. Mandal、Rajeev Sakhuja
DOI:10.1021/acs.joc.0c02729
日期:2021.2.5
A mild Rh-catalyzed method was developed for the synthesis of hydroxyimino functionalized indazolo[1,2-a]cinnolines and phthalazino[2,3-a]cinnolines by reductive [4 + 2] annulation between 1-arylindazolones and 2-aryl-2,3-dihydrophthalazine-1,4-diones with varied nitroolefins. The targeted oxime decorated tetracyclic fused cinnolines were synthesized via sequential C–H activation/olefin insertion/reduction
开发了一种温和的Rh催化方法,通过还原1-芳基吲唑酮和2-芳基-[4 + 2]环合反应,合成羟基亚氨基官能化的吲唑并[1,2- a ] cinnolines和邻苯并[2,3- a ] cinnolines。 2,3-二氢酞嗪-1,4-二酮与各种硝基烯烃。在无还原剂的条件下,通过连续的C–H活化/烯烃插入/还原反应,合成了目标肟肟修饰的四环稠合肉桂醛。
Therapeutic pyrazolo[3,4-B]pyridines and indazoles
申请人:Schelkun M. Robert
公开号:US20060116376A1
公开(公告)日:2006-06-01
The present invention provides for compounds of Formula I:
wherein R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, X, and L have any of the values defined in the specification, and pharmaceutically acceptable salts thereof, that are useful as agents in the treatment of central nervous disorders and conditions including attention deficit hyperactivity disorder, neuropathic pain, urinary incontinence, anxiety, depression, and schizophrenia and fibromyalgia. Also provided are pharmaceutical compositions comprising one or more compounds of Formula I.
Synthesis of spirosuccinimides <i>via</i> annulative cyclization between <i>N</i>-aryl indazolols and maleimides under rhodium(<scp>iii</scp>) catalysis
作者:Ju Young Kang、Won An、Suho Kim、Na Yeon Kwon、Taejoo Jeong、Prithwish Ghosh、Hyung Sik Kim、Neeraj Kumar Mishra、In Su Kim
DOI:10.1039/d1cc04599g
日期:——
The rhodium(III)-catalyzed spiroannulation reactionbetween N-aryl indazol-3-ols and maleimides is described herein. The developed method is showcased by the construction of spirosuccinimides using bioactive molecule-linked and chemical probe-linked maleimides. Combined mechanistic investigations including the determination of an isolable rhodacycle complex aided the elucidation of a plausible reaction
本文描述了铑( III )-催化的N-芳基吲唑-3-醇和马来酰亚胺之间的螺环化反应。所开发的方法通过使用生物活性分子连接和化学探针连接的马来酰亚胺构建螺旋琥珀酰亚胺来展示。包括确定可分离的红环化合物在内的联合机理研究有助于阐明合理的反应机制。
Action of nitrous acid on n-substituted-isatinic acids. Disproportionation to indazolols.
作者:Leandro Baiocchi、Giuseppe Picconi
DOI:10.1016/s0040-4039(00)88192-7
日期:1983.1
By reacting N-substituted-2-isatinic acids with nitrousacid, indazolols, N-nitroso-N-substituted anthranilic acids and the esters of said acids with the above mentioned indazolols were obtained through disproportionation of the N-nitroso-N-substituted-isatinic acids.
Assembly of the Hydroxycinnoline Core via Hydrazide-Assisted Rh(III)-Catalyzed C–H Functionalization and Annulation
作者:Suho Kim、Heon Kyu Park、Neeraj Kumar Mishra、In Su Kim、Ju Young Kang
DOI:10.1055/a-1811-7948
日期:2022.10
indazolones has emerged as a pivotal topic in catalytic C–H functionalization events. Herein we report the hydrazide-assisted rhodium(III)-catalyzed cross-coupling reactions of N-arylphthalazinones and N-arylindazolones with vinylene carbonate. This method provides directaccess to tetracyclic hydroxycinnolines. Complete site-selectivity and functional group compatibility were observed.