Rhodium catalysed dehydrogenative C–H/N–H functionalization was developed to construct phthalazino[2,3-a]-/indazolo[1,2-a]cinnolines by reacting N-phenyl phthalazine/indazole with alkynes. The synthesized compounds exhibit prominent fluorescence properties in solid and aggregation states. Their application in cell imaging was investigated using various cancer cell lines.
铑催化的脱氢CH- NH / NH官能团的开发是通过使N-苯基酞嗪/吲唑与炔烃反应来构建酞菁[ 2,3- a ]-/吲哚并[1,2- a ]辛啉。合成的化合物在固态和聚集态下显示出突出的荧光特性。使用各种癌细胞系研究了它们在细胞成像中的应用。
[EN] PYRIDAZINONE-BASED BROAD SPECTRUM ANTI-INFLUENZA INHIBITORS<br/>[FR] INHIBITEURS ANTIGRIPPAUX À LARGE SPECTRE À BASE DE PYRIDAZINONE
申请人:HOFFMANN LA ROCHE
公开号:WO2018001948A1
公开(公告)日:2018-01-04
The present invention relates to compounds of formula (I): (I) or pharmaceutically acceptable salts thereof, as well as processes for their manufacture, pharmaceutical compositions comprising them, and their use as medicaments.
Expedient synthesis of new cinnoline diones by Ru-catalyzed regioselective unexpected deoxygenation-oxidative annulation of propargyl alcohols with phthalazinones and pyridazinones
作者:Subramani Rajkumar、S. Antony Savarimuthu、Rajendran Senthil Kumaran、C. M. Nagaraja、Thirumanavelan Gandhi
DOI:10.1039/c5cc09347c
日期:——
Ruthenium-catalyzed simple, cascade and one-pot synthesis of cinnoline-fused diones has been carried out by the C–H activation of phthalazinones/pyridazinones.
钌催化的简单、级联和一锅法合成了咖啉并环化二酮,通过对邻苯二酮/吡啶并咪唑酮的C-H活化。
Ruthenium Catalyzed C−H Amidation and Carbocyclization using Isocyanates: An Access to Amidated 2‐phenylphthalazine‐1,4‐diones and Indazolo[1,2‐
<i>b</i>
]phthalazine‐triones
作者:Pidiyara Karishma、Alisha Gogia、Sanjay K. Mandal、Rajeev Sakhuja
DOI:10.1002/adsc.202001146
日期:2021.2.2
A direct carbocyclization of 2‐aryl‐2,3‐dihydrophthalazine‐1,4‐diones is achieved using isocyanates as carbonyl source via Ru(II)‐catalyzed sequential ortho‐amidation followed by intramolecular nucleophilic substitution, delivering substituted indazolo[1,2‐b]phthalazine‐triones in good‐to‐excellent yields. For ortho‐substituted 2‐aryl‐2,3‐dihydrophthalazine‐1,4‐diones, the corresponding amidated products
使用异氰酸酯作为羰基来源,通过Ru(II)催化的顺序邻位酰胺化反应,然后进行分子内亲核取代,将取代的吲唑并[ 2,2-]-2-芳基-2,3-二氢酞嗪-1,4-二酮直接碳环化[1,2] ‐ b ]酞嗪三酮,收率良好。对于邻位取代的2-芳基-2,3-二氢邻苯二甲酸1,4-二酮,还可以通过修改反应参数以高收率分离出相应的酰胺化产物。异氰酸酯作为羰基来源的应用,在两个偶联配偶体上的高官能团耐受性以及合成的熔融和官能化邻苯二氮酮的多种化学转化是这项工作的重点。
Direct synthesis of indazole derivatives <i>via</i> Rh(<scp>iii</scp>)-catalyzed C–H activation of phthalazinones and allenes
A novel Rh(III)-catalyzed annulation of phthalazinones or pyridazinones with various allenes was developed, leading to the formation of indazole derivatives bearing a quaternary carbon in moderate to good yields. The targeted products were synthesized via sequential C–H activation and olefin insertion, followed by β-hydride elimination and intramolecular cyclization. The synthetic protocol proceeded
开发了一种新型 Rh( III ) 催化的酞嗪酮或哒嗪酮与各种丙二烯的环化反应,从而以中等至良好的产率形成带有季碳的吲唑衍生物。目标产物通过连续的C-H活化和烯烃插入,然后是β-氢化物消除和分子内环化来合成。合成方案有效地进行,具有广泛的官能团耐受性、高原子效率和高Z选择性。通过合成转化证明了该方法的实用性。