Synthesis and calcium antagonistic activity of a series of diethyl benzofuryl, benzothienyl and benzogammapyronyl benzylphosphonates
摘要:
In this work we present about 15 original heterocyclic diethyl benzylphosphonate analogues of fostedil, in which we have varied the nature of the heterocycle, the substituents or the phosphonic group, or even the position of this latter. Three diethyl 4-(2-benzofuryl) benzyl phosphonates exhibited slightly higher calcium antagonism than the control. Solely substitution with a fluorine atom was able to maintain activity, whereas the other modifications always decreased it.
Synthesis and calcium antagonistic activity of a series of diethyl benzofuryl, benzothienyl and benzogammapyronyl benzylphosphonates
摘要:
In this work we present about 15 original heterocyclic diethyl benzylphosphonate analogues of fostedil, in which we have varied the nature of the heterocycle, the substituents or the phosphonic group, or even the position of this latter. Three diethyl 4-(2-benzofuryl) benzyl phosphonates exhibited slightly higher calcium antagonism than the control. Solely substitution with a fluorine atom was able to maintain activity, whereas the other modifications always decreased it.
Nickel-catalyzed and Li-mediated regiospecific C–H arylation of benzothiophenes
作者:Yorck Mohr、Gaëlle Hisler、Léonie Grousset、Yoann Roux、Elsje Alessandra Quadrelli、Florian M. Wisser、Jérôme Canivet
DOI:10.1039/d0gc00917b
日期:——
A nickel-based catalytic system for the regiospecific C2–H arylation of benzothiophene has been established. NiCl2(bpy) is used as a catalyst in combination with LiHMDS as a base in dioxane. The catalytic system is applicable to a variety of functionalized benzothiophenes, as well as other heteroarenes including thiophene, benzodithiophene, benzofuran and selenophene in combination with iodo aryl electrophiles
Nickel species have been introduced into porous phenanthroline-based organic polymer, which is catalytically active, regioselective, and recyclable for C−H activation of heterocycles. This work offers a new opportunity for design of novel non-noble metal-based heterogeneous catalysts for the regioselective C−H activation of heterocycles.
Reaction pathways for the cyclization of ortho-thioalkyl and ortho-thioaryl substituted phenyl radicals with alkynes. Reaction of o-methylthioarenediazonium tetrafluoroborates with alkynes to give 2-substituted benzo[b]thiophenes
An easily effected aromatic annelation is described involving reaction of O-thioalkyl and O-thioaryl substitutedPhenylradicals with alkynes to give2-substitutedbenzo[b]thiophenes; the mechanism is discussed.
描述了一种易于实现的芳族芳构化反应,该过程涉及O-硫代烷基和O-硫代芳基取代的苯基与炔烃的反应,生成2-取代的苯并[ b ]噻吩;讨论了该机制。
Aromatic amine derivative and organic electroluminescent device using the same
申请人:IDEMITSU KOSAN CO., LTD.
公开号:US10297765B2
公开(公告)日:2019-05-21
Provided are: an aromatic amine derivative in which a terminal substituent such as a dibenzofuran ring or a dibenzothiophene ring is bonded to a nitrogen atom directly or through an arylene group or the like; an organic electroluminescence device including an organic thin film layer formed of one or more layers including a light emitting layer and interposed between a cathode and an anode in which a layer of the organic thin film layer contains the aromatic amine derivative by itself or as a component of a mixture, and the device has a long lifetime and high luminous efficiency; and an aromatic amine derivative for realizing the device.