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。
Copper-Catalyzed Mild and Efficient
Entry to 1-Substituted Indazolones
A variety of 1-alkyl- and aryl-substituted indazolones were synthesized easily starting from commercially available 2-halobenzoic acids and hydrazines via the copper-catalyzed intramolecular C-N bond formation of 2-halobenzohydrazides under mild conditions.
Rh(iii)-catalyzed [4 + 1] annulation of 1-arylindazolones with alkynyl cyclobutanols: access to indazolo[1,2-a]indazolones
作者:Jiang Hu、Jidan Liu、Wenwen Cui、Liyao Zheng、Renjie Wang、Zhao-Qing Liu、Shouzhi Pu
DOI:10.1039/d4ob01067a
日期:——
A convenient and efficient synthesis of structurally diverse indazolo[1,2-a]indazolones via a Rh(iii)-catalyzed [4 + 1] annulation of 1-arylindazolones with alkynyl cyclobutanols has been achieved by combining C–H and C–C bond cleavage.