PdII-Catalyzed Di-o-olefination of Carbazoles Directed by the Protecting N-(2-Pyridyl)sulfonyl Group
摘要:
Despite the significance of carbazole in pharmacy and material science, examples of the direct C-H functionalization of this privileged unit are quite rare. The N-(2-pyridyl)sulfonyl group enables the Pd-II-catalyzed ortho-olefination of carbazoles and related systems, acting as both a directing and readily removable protecting group. This method features ample structural versatility, affording typically the double ortho-olefination products (at Cl and C8) in satisfactory yields and complete regiocontrol. The application of this procedure to related heterocyclic systems, such as indoline, is also described.
[EN] HALOGEN SUBSTITUTED DIKETONES, PYRAZOLE COMPOUNDS AND PROCESSES FOR THE MANUFACTURE OF PYRAZOLE COMPOUNDS<br/>[FR] DICÉTONES SUBSTITUÉES PAR UN HALOGÈNE, COMPOSÉS DE PYRAZOLE ET LEURS PROCÉDÉS DE PRODUCTION
申请人:SOLVAY
公开号:WO2017129759A1
公开(公告)日:2017-08-03
The present invention concerns new halogen substituted diketone compounds, new pyrazole compounds, processes for the manufacture of pyrazole compounds and processes for the manufacture of agrochemical or pharmaceutical compounds.
Dual role of ethyl bromodifluoroacetate in the formation of fluorine-containing heteroaromatic compounds
作者:Xingxing Ma、Shaoyu Mai、Yao Zhou、Gui-Juan Cheng、Qiuling Song
DOI:10.1039/c8cc04298e
日期:——
BrCF2COOEt plays a dual role as a C1 synthon and a difluoroalkylating reagent for the first time. Mechanistic studies supported by DFT calculations suggest that a base plays an active role in the formation of the key intermediate isocyanides generated in situ from primary amines and difluorocarbene.
[EN] UREA DERIVATIVES AND THEIR USE AS FATTY-ACID BINDING PROTEIN (FABP) INHIBITORS<br/>[FR] DÉRIVÉS D'URÉE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE LA PROTÉINE DE LIAISON À UN ACIDE GRAS (FABP)
申请人:HOFFMANN LA ROCHE
公开号:WO2014146994A1
公开(公告)日:2014-09-25
The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, W, A and B are as described herein, compositions including the compounds and methods of using the compounds.
[Problems] Provided is a compound which has an antagonistic action on a muscarinic M
3
receptor and is useful as an active ingredient of a prophylactic and/or therapeutic agent for an inflammatory disease such as a chronic obstructive pulmonary disease (COPD), asthma and the like.
[Means for Solving Problems] The present inventors have made studies on a compound having an antagonistic action on the binding of a muscarinic M
3
receptor, and they have found that an aza-bridged-ring compound or a salt thereof has an antagonistic action on the binding of a muscarinic M
3
receptor, thereby completing the present invention. The aza-bridged-ring compound of the present invention has an antagonistic action on the binding of a muscarinic M
3
receptor, and can be used as a prophylactic and/or therapeutic agent for an inflammatory disease such as a chronic obstructive pulmonary disease (COPD), asthma and the like.
A method for producing a biaryl compound, comprising reacting an aromatic organic compound with at least one compound selected from the group consisting of aromatic organoboron compounds and boroxine compounds, in the presence of a zero-valent nickel catalyst, phosphine ligand and base.