tert-Butyl nitrite (TBN) as the N atom source for the synthesis of substituted cinnolines with 2-vinylanilines and a relevant mechanism was studied
作者:XiaoBo Pang、LianBiao Zhao、DaGang Zhou、Ping Yong He、ZhenYu An、Ji Xiang Ni、RuLong Yan
DOI:10.1039/c7ob01553d
日期:——
A green method to synthesize cinnolines by 6π electrocyclic reaction with alkenyl amines and TBN has been developed. TBN plays a dual role both as the nitrogen atom source and oxidant in this procedure. Relevant mechanism experiments reveal the reaction proceeds through electrocyclic reaction and with diazo hydroxide as a key intermediate.
Iridium-Catalyzed α-Selective Arylation of Styrenes by Dual C−H Functionalization
作者:Phillippa Cooper、Giacomo E. M. Crisenza、Lyman J. Feron、John F. Bower
DOI:10.1002/anie.201808299
日期:2018.10.22
An IrI -system modified with a ferrocene derived bisphosphine ligand promotes α-selectivearylation of styrenes by dualC-Hfunctionalization. These studies offer a regioisomeric alternative to the Pd-catalyzed Fujiwara-Moritani reaction.
用二茂铁衍生的双膦配体修饰的 IrI 系统通过双 CH 官能化促进苯乙烯的 α-选择性芳基化。这些研究为 Pd 催化的 Fujiwara-Moritani 反应提供了一种区域异构替代方案。
Pd-Assisted Cross-Coupling Reactions with 4-Chlorocinnoline
A series of 4‐ethynylcinnolines 3a–e was prepared by Sonogashira reaction of 4‐chlorocinnoline (1) with appropriate alkynes. Moreover, Suzuki coupling of 1 with boronic esters gave the corresponding 4‐arylcinnolines 5a–c. Detailed NMR spectroscopic data including unambiguous chemical shift assignments of all 1H, 13C, and 15N resonances of the obtained cinnoline derivatives are reported.
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0212726A2
公开(公告)日:1987-03-04
The growth of unwanted plants is controlled by certain optionally substituted cinnoline-4-carboxylic acids and ester, amino, hydroxamic acid and hydrazide derivatives thereof, and salts and N-oxides of such compounds, The invention further includes compositions containing such compounds, the preparation of the compounds and compositions, and certain novel compounds per se.
A series of novel cinnoline sulphonamidederivatives and 4-substuted cinnoline derivatives (13a-h, 16a-h and 17–31 total 33 analogues) were designed based on scaffold hopping techniques and evaluated for their antileukemic activity on wild type K562 as well as imatinib resistant cell lines (K562-IR1 and K562-IR2). Out of 33 analogues, five compounds (19, 22, 23, 28, and 31) exhibited potent antileukemic