General electrochemical Minisci alkylation of <i>N</i>-heteroarenes with alkyl halides
作者:Roberto del Río-Rodríguez、Lorena Fragoso-Jarillo、Alberto F. Garrido-Castro、M. Carmen Maestro、Jose A. Fernández-Salas、José Alemán
DOI:10.1039/d2sc01799g
日期:——
Herein, we report, a general, facile and environmentally friendly Minisci-type alkylation of N-heteroarenes under simple and straightforward electrochemical conditions using widely available alkylhalides as radical precursors. Primary, secondary and tertiary alkyl radicals have been shown to be efficiently generated and coupled with a large variety of N-heteroarenes. The method presents a very high
Alkanes in Minisci-Type Reaction under Photocatalytic Conditions with Hydrogen Evolution
作者:Loris Laze、Beatriz Quevedo-Flores、Irene Bosque、Jose C. Gonzalez-Gomez
DOI:10.1021/acs.orglett.3c02619
日期:2023.12.8
We report herein a protocol for the selective activation of C(sp3)–H bonds based on the interplay of two readily available organic catalysts and their successful implementation in cross-coupling azaarenes with alkanes. This Minisci-like reaction is promoted by visible light at room temperature and is free from chemical oxidants, metals, and chlorinated solvents. A wide range of substrates are compatible
Ring-substituted quinolines. Part 2: Synthesis and antimycobacterial activities of ring-substituted quinolinecarbohydrazide and ring-substituted quinolinecarboxamide analogues
作者:Vikramdeep Monga、Amit Nayyar、Balasubramanian Vaitilingam、Prakash B. Palde、Sarbjit Singh Jhamb、Sukhraj Kaur、Prati Pal Singh、Rahul Jain
DOI:10.1016/j.bmc.2004.09.017
日期:2004.12
Additional structural modifications of the new chemical entity, 2,8-dicyclopentyl-4-methylquinoline (DCMQ; MIC = 6.25mug/mL, M. tuberculosis H37Rv) resulted in the synthesis of four new series of the ring-substituted quinolinecarbohydrazides (series 1-4) constituting 22 analogues. All new derivatives were evaluated for in vitro antimycobacterial activities against drug-sensitive M. tuberculosis H37Rv strain. Certain ring-substituted-2-quinolinecarbohydrazide analogues described herein showed good inhibitory activity. In particular, analogues 4-(1-adamantyl)-2-quinolinecarbohydrazide (2d), 4,5-dicyclopentyl-2-quinolinecarbohydrazide (2e), 4,8-dicyclopentyl-2-quinolinecarbohydrazide (2f), and 4,5-dicyclohexyl-2-quinolinecarbohydrazide (2g) have exhibited the MIC value of 6.25ltg/mL. Further investigation of the most suitable lead prototype, 4-(1-adamantyl)-2-quinolinecarbohydrazide (2d, series 1) led to the synthesis of N2-alkyl/N2,N2-dialkyl/N2-aryl-4-(1-adamantyl)-2-quinolinecarboxamides (series 5) consisting of 13 analogues. Some of the synthesized carboxamides 7a, 7h, and 7m reported herein have exhibited excellent antimycobacterial activities in the range of 6.25-3.1251mug/mL against drug-sensitive and drug-resistant M. tuberculosis H37 Rv strains.
Skita; Wulff, Chemische Berichte, 1926, vol. 59, p. 2691