199786-58-8Relevant academic research and scientific papers
A new solvatochromic linear π-conjugated dye based on phenylene-(poly)ethynylene as supersensitive low-level water detector in organic solvents
Guan,Jia,Zhang,Zhang,Ma,Lu,Lai,Lei
, p. 873 - 880 (2017)
A novel class of phenylene-(poly)ethynylene-based dye Sensor 1 with remarkable properties of solvatochromism has been designed and synthesized. A long, coplanar and asymmetry electron-rich π-conjugated structure endows Sensor 1 with maximum solvatochromic
INHIBITORS OF PURINE NUCLEOSIDE PHOSPHORYLASE - SYNTHESIS AND USE THEREOF FOR TREATMENT OF T-CELL ACUTE LYMPHOBLASTIC LEUKEMIA AND LYMPHOMA
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Page/Page column 19-20, (2021/05/07)
The present invention relates to new compounds of general formula I, their synthesis, their pharmaceutically acceptable salts, and their use in treatment of T-cell acute lymphoblastic leukemia and lymphoma.
Pd(II)-Catalyzed Synthesis of Benzocyclobutenes by β-Methylene-Selective C(sp3)-H Arylation with a Transient Directing Group
Chen, Xiangyang,Hoskin, John F.,Houk, K. N.,Provencher, Philip A.,Sorensen, Erik J.,Wong, Jonathan J.,Yu, Jin-Quan
supporting information, p. 20035 - 20041 (2021/12/09)
Methylene-selective C-H functionalization is a significant hurdle that remains to be addressed in the field of Pd(II) catalysis. We report a Pd(II)-catalyzed synthesis of benzocyclobutenes by methylene-selective C(sp3)-H arylation of ketones. The reaction utilizes glycine as a transient directing group and a 2-pyridone ligand, which may govern the methylene selectivity by making intimate molecular associations with the substrate during concerted metalation-deprotonation. This reaction is shown to be highly selective for intramolecular methylene C(sp3)-H arylation, thus enabling sequential C(sp3)-H functionalization.
Iodolopyrazolium Salts: Synthesis, Derivatizations, and Applications
Boelke, Andreas,Caspers, Lucien D.,Kuczmera, Thomas J.,Lork, Enno,Nachtsheim, Boris J.
, p. 7261 - 7266 (2020/10/05)
The synthesis of iodolopyrazolium triflates via an oxidative cyclization of 3-(2-iodophenyl)-1H-pyrazoles is described. The reaction is characterized by a broad substrate scope, and various applications of these novel cyclic iodolium salts acting as useful synthetic intermediates are demonstrated, in particular in site-selective ring openings. This was finally applied to generate derivatives of the anti-inflammatory drug celecoxib. Their application as highly active halogen-bond donors is shown as well.
One-Pot Synthesis and Conformational Analysis of Six-Membered Cyclic Iodonium Salts
Caspers, Lucien D.,Spils, Julian,Damrath, Mattis,Lork, Enno,Nachtsheim, Boris J.
, p. 9161 - 9178 (2020/08/14)
Two one-pot procedures for the construction of carbon-bridged diaryliodonium triflates and tetrafluoroborates are described. Strong Br?nsted acids enable the effective Friedel-Crafts alkylation with diversely substituted o-iodobenzyl alcohol derivatives, providing diphenylmethane scaffolds, which are subsequently oxidized and cyclized to the corresponding dibenzo[b,e]iodininium salts. Based on NMR investigations and density functional theory (DFT) calculations, we could verify the so-far-undescribed existence of two stable isomers in cyclic iodonium salts substituted with aliphatic side chains in the carbon bridge.
CuSO4-Catalyzed dual annulation to synthesize O, S or N-containing tetracyclic heteroacenes
Kang, Yan-Biao,Qu, Jian-Ping,Shan, Xiang-Huan,Yang, Bo
supporting information, p. 4063 - 4066 (2020/04/20)
In this work, CuSO4 is utilized as a practical redox catalyst for tandem dual annulation in the synthesis of indole-fused tetracyclic heteroacenes, which are important skeletons in both medicinal chemistry and materials chemistry. The preparation of such skeletons in a convenient and efficient manner is in high demand. This method realizes the modular synthesis of benzofuro-, benzothieno-, and indoloindoles from abundant feedstocks such as 2-halobenzyl halides and nitrile derivatives in up to 99% yields, providing a rapid access to diverse indole-fused heteroacenes with biological or optoelectronic properties.
ISOQUINOLINE DERIVATIVES AS PERK INHIBITORS
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Page/Page column 81, (2018/02/17)
The invention is directed to substituted isoquinoline derivatives and uses thereof. Specifically, the invention is directed to compounds according to Formula I and the use of compounds of Formula (I) in treating disease states: (I) wherein R1,
Cu-Catalyzed Enantioselective Ring Opening of Cyclic Diaryliodoniums toward the Synthesis of Chiral Diarylmethanes
Li, Bin,Chao, Zengyin,Li, Chunyu,Gu, Zhenhua
supporting information, p. 9400 - 9403 (2018/07/30)
A Cu-catalyzed enantioselective desymmetrizing ring-opening reaction of six-membered cyclic diaryliodonium salts with carboxylic acids or thioacids is reported for the facile access to chiral diarylmethanes. A Cu/[cyclopropyl bis(oxazoline)] catalyst well
Phenanthroline- tBuOK Promoted Intramolecular C-H Arylation of Indoles with ArI under Transition-Metal-Free Conditions
Shan, Xiang-Huan,Yang, Bo,Zheng, Hong-Xing,Qu, Jian-Ping,Kang, Yan-Biao
supporting information, p. 7898 - 7901 (2019/01/04)
The first example of phenanthroline-tBuOK promoted intramolecular radical C-H arylation of N-(2-iodobenzyl)indoles without involvement of transition metals has been developed. A variety of substituted 6H-isoindolo [2, 1-a] indoles were prepared by a simple and efficient intramolecular cyclization using 1,10-phenanthroline in the presence of potassium tert-butoxide and chlorobenzene. This strategy provides a fast and versatile access to isoindolo[2,1-a]indole derivatives for the synthesis of pharmaceuticals and organic electroluminescent (EL) materials.
Palladium-catalyzed intermolecular tandem cyclization reaction: a highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3′-isochroman] scaffolds
Wang, Liang,Li, Xuehu,Tao, Hua,Zhou, Xiang,Lu, Xihong,Du, Wenyue,Jiang, Tingting,Xin, Zhijun,Liang, Jianping
supporting information, p. 2403 - 2410 (2017/03/20)
A highly regioselective synthesis of functionalized 3H-spiro[isobenzofuran-1,3′-isochroman] scaffolds using a novel palladium-catalyzed tandem cyclization reaction is explored. During the reaction process, C-O, C-C and C-O bonds are sequentially formed in one pot via decarboxylative allenylpalladium formation, nucleophilic attack, arylpalladium addition and intramolecular nucleophilic attack.
