5078-07-9Relevant academic research and scientific papers
A novel method for the synthesis of oxazolocoumarin derivatives
Abdelghani, Essam,El-Aal, Ali Abd,Shehab, Wesam,El-Mobayed, Medhat
, p. 1373 - 1376 (2003)
Anodic oxidation of 7-hydroxycoumarin derivatives 1a-f in anhyd acetonitrile-lithium perchlorate at constant potential between 1.70-1.80 V (vs. Ag/10-2 M Ag+) using an undivided cell and platinium gauze electrodes leads to the formation of the corresponding oxazolocoumarin derivatives 2 and/or 3 according to the position of the second OH group in the benzene ring of the coumarin derivatives 1e,f. The formation of these oxidation products is discussed.
Benzoxazole compound and application thereof
-
Paragraph 0063; 0064; 0066, (2020/07/06)
The invention belongs to the field of medical treatment, and particularly relates to a benzoxazole compound and application thereof, wherein the benzoxazole compound has a compound structure as represented by a formula (A), and the compound can be used fo
Multicatalytic Beckmann rearrangement of 2-hydroxylarylketone oxime: Switchable synthesis of benzo[d]oxazoles and N-(2-hydroxylaryl)amides
Li, Zhen,Fang, Chengtao,Zheng, Yannan,Qiu, Guanyinsheng,Li, Xiaofang,Zhou, Hongwei
, p. 3934 - 3937 (2018/10/02)
A switchable synthesis route is developed for benzo[d]oxazole derivatives and (2-hydroxylaryl)benzamide from 2-hydroxylbenzeneketoxime using organomolecules (BOP-Cl, and CNC) and Lewis acid cocatalyzed Beckmann rearrangement (BR) reaction. Further, this reaction is switched using different organocatalysts.
IRE-1α INHIBITORS
-
Paragraph 1374; 1376; 1377, (2016/10/07)
PROBLEM TO BE SOLVED: To provide compounds which directly inhibit inositol requiring enzyme 1 (IRE-1α activity) in vitro, prodrugs, and pharmaceutically acceptable salts thereof. SOLUTION: The present invention provides a compound represented by formula (A) [R3 and R4 are H or the like; Q5-Q8, together with the benzene ring to which they are attached, form a benzofused ring, where at least one of Q5-Q8 is a heteroatom selected from N, O, and S. COPYRIGHT: (C)2016,JPOandINPIT
Utility of Nitrogen Extrusion of Azido Complexes for the Synthesis of Nitriles, Benzoxazoles, and Benzisoxazoles
Nimnual, Phongprapan,Tummatorn, Jumreang,Thongsornkleeb, Charnsak,Ruchirawat, Somsak
, p. 8657 - 8667 (2015/09/15)
The utility of the nitrogen extrusion reaction of azido complexes, generated in situ from the corresponding aldehydes or ketones with TMSN3 in the presence of ZrCl4 or TfOH, has been described. These azido complexes could undergo three different pathways, depending on the substrates. First, azido methanolate complexes or imine diazonium ions could lead to benzisoxazole products via an intramolecular nucleophilic substitution. Second, imine diazonium ions could also undergo either the elimination of proton to provide nitrile products in good to excellent yields or an aryl migration, followed by an intramolecular nucleophilic addition, to give benzoxazole products in good yields.
One-pot synthesis of benzoxazoles via the metal-free ortho-C-H functionalization of phenols with nitroalkanes
Aksenov, Nicolai A.,Aksenov, Alexander V.,Nadein, Oleg N.,Aksenov, Dmitrii A.,Smirnov, Alexander N.,Rubin, Michael
, p. 71620 - 71626 (2015/09/08)
PPA-activated nitroalkanes are employed in the design of a one-pot cascade transformation involving metal-free and oxidant-free direct ortho-C-H functionalization, followed by Beckman rearrangement and intramolecular cyclocondensation to produce benzoxazoles and benzobisoxazoles directly from easily available phenols.
Development of a multikilogram synthesis of a chiral epoxide precursor to a CCR1 antagonist. Use of in situ monitoring for informed optimisation via fragile intermediates
Ange, Debra,Booker, James E. M.,Pedge, Nicholas,Sinclair, Rhona,Sleigh, Chris,Stefinovic, Marijan,Vaz, Luis-Manuel,Way, Edward
scheme or table, p. 72 - 84 (2010/05/02)
The optimisation and scale up of a manufacturing route to a key intermediate, acetic acid 4-acetylamino-3-(2-methyl-oxiranyl- methoxy)phenyl ester (2), utilising a SNAr coupling, the hydro- genation of a nitro moiety and the conversion of a chi
Efficient synthesis of 2-substituted benzoxazoles via Beckmann rearrangement of 2-hydroxyaryl ketoximes using diethyl chlorophosphate
Sardarian,Shahsavari-Fard
experimental part, p. 1391 - 1393 (2009/04/06)
An efficient method for synthesis of 2-substituted benzoxazoles has been developed using diethyl chlorophosphate. 2-Hydroxyaryl ketoximes are efficiently converted to benzoxazoles by heating in the presence of diethyl chlorophosphate via Beckmann rearrangement of ketoxime in excellent yields. This method avoids the use of strong acids, harsh conditions, and long reaction times. Georg Thieme Verlag Stuttgart.
CYANOISOQUINOLINE COMPOUNDS AND METHODS OF USE THEREOF
-
Page/Page column 92, (2008/06/13)
The present invention relates to cyanoisoquinoline compounds suitable for use in treating hypoxia inducible factor-mediated and/or erythropoietin-associated conditions. The cyanoisoquinoline compounds of the invention have the following structure: Formula (I).
NOVEL TRICYCLIC SPIRODERIVATIVES AS MODULATORS OF CHEMOKINE RECEPTOR ACTIVITY
-
Page/Page column 41, (2008/06/13)
The invention provides compounds of formula (I) wherein m, R1, n, R2, q, p, X, Y, R3, R4, t and, R5 are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
