19712-48-2Relevant academic research and scientific papers
Synthesis of Functionalized Indolines and Dihydrobenzofurans by Iron and Copper Catalyzed Aryl C-N and C-O Bond Formation
Henry, Martyn C.,Senn, Hans Martin,Sutherland, Andrew
, p. 346 - 364 (2019/01/08)
A simple and effective one-pot, two-step intramolecular aryl C-N and C-O bond forming process for the preparation of a wide range of benzo-fused heterocyclic scaffolds using iron and copper catalysis is described. Activated aryl rings were subjected to a highly regioselective, iron(III) triflimide-catalyzed iodination, followed by a copper(I)-catalyzed intramolecular N-or O-arylation step leading to indolines, dihydrobenzofurans, and six-membered analogues. The general applicability and functional group tolerance of this method were exemplified by the total synthesis of the neolignan natural product, (+)-obtusafuran. DFT calculations using Fukui functions were also performed, providing a molecular orbital rationale for the highly regioselective arene iodination process.
Direct Amidation of Carboxylic Acids through an Active α-Acyl Enol Ester Intermediate
Xu, Xianjun,Feng, Huangdi,Huang, Liliang,Liu, Xiaohui
, p. 7962 - 7969 (2018/06/18)
The development of a highly efficient and simple protocol for the direct amidation of carboxylic acids is described employing ynoates as novel coupling reagents. The transformation proceeds in good to excellent yields via in situ α-acyl enol ester intermediates formation under mild reaction conditions. This useful method has been demonstrated for a range of substrates to provide a succinct access to structurally diverse amides, including key intermediates of glibenclamide, tiapride hydrochloride, and nateglinide, and can be conducted on a mole scale.
Microwave-assisted synthesis of amide under solvent-free conditions
Wang, Xiao-Jian,Yang, Qian,Liu, Fei,You, Qi-Dong
, p. 1028 - 1035 (2008/09/18)
An efficient and environmentally friendly synthetic method for the synthesis of primary amides under microwave irradiation was described, in which the primary amine was directly reacted with acid without any catalytic agents. The reaction took place in 8-12-min, which was much shorter than the traditional synthetic methods, with almost quantitative yields. The influential factor of the reaction was discussed. The tautomerization between the carboxylic acid group and the H atom in α-carbon of L-amino acid was observed, presumably a dehydrated intermediate forming from this tautomerized isomer. Copyright Taylor & Francis Group, LLC.
3D pharmacophore models for 1,2,3,4-tetrahydroisoquinoline derivatives acting as anticonvulsant agents
De Luca, Laura,Gitto, Rosaria,Barreca, Maria Letizia,Caruso, Roberta,Quartarone, Silvana,Citraro, Rita,De Sarro, Giovambattista,Chimirri, Alba
, p. 388 - 400 (2007/10/03)
A 3D pharmacophore model predicting anticonvulsant activity was obtained for a series of 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline derivatives recently disclosed as a new class of non-competitive AMPA receptor antagonists. The training set included 17
Tetrahydroisoquinolines as subtype selective estrogen agonists/antagonists
Chesworth, Richard,Zawistoski, Michael P.,Lefker, Bruce A.,Cameron, Kimberly O.,Day, Robert F.,Mangano, F. Michael,Rosati, Robert L.,Colella, Stacy,Petersen, Donna N.,Brault, Amy,Lu, Bihong,Pan, Lydia C.,Perry, Pia,Ng, Oicheng,Castleberry, Tessa A.,Owen, Thomas A.,Brown, Thomas A.,Thompson, David D.,DaSilva-Jardine, Paul
, p. 2729 - 2733 (2007/10/03)
Two series of 6-hydroxy and 7-hydroxy tetrahydroisoquinolines were prepared. Evaluating a range of C-1, C-4, and N-substituents led to the discovery of ER α and ER β selective analogs.
Tetrahydroisoquinoline compounds as estrogen agonists/antagonists
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, (2008/06/13)
This invention relates to compounds useful for treating or preventing obesity, breast cancer, osteoporosis, endometriosis, cardiovascular disease, prostatic disease, and the like, and to pharmaceutical composition, methods, and kits comprising such compou
Synthesis and Molecular Modeling of 1-Phenyl-1,2,3,4-tetrahydroisoquinolines and Related 5,6,8,9-Tetrahydro-13bH-dibenzoquinolizines as D1 Dopamine Antagonists
Minor, Deborah L.,Wyrick, Steven D.,Charifson, Paul S.,Watts, Val J.,Nichols, David E.,Mailman, Richard B.
, p. 4317 - 4328 (2007/10/02)
New 1-phenyl-1,2,3,4-tetrahydroisoquinolines and related 5,6,8,9-tetrahydro-13bH-dibenzo-quinolizines were prepared as ring-contracted analogs of the prototypical 1-phenyl-2,3,4,5-tetrahydrobenzazepines (e.g., SCH23390) as a continuation of our studi
