An Effective Activation of Palladium Phosphine Complexes in Aqueous Phase Reactions of Hetero-Aromatic Boronic Acids with Aryl Halides
作者:N. A. Bumagin、I. S. Veselov、D. S. Belov
DOI:10.1007/s10593-014-1443-1
日期:2014.4
We have developed a simple and effective method for the activation of palladium phosphine complexes in the Suzuki reaction (TON up to 9800, TOF up to 58800 h-1) by selecting an aqueous reaction medium instead of organic solvents. This method was elaborated for a high yield synthesis of heteroaromatic biaryls with furyl and thienyl groups.
通过选择水性反应介质代替有机溶剂,我们开发了一种简单有效的活化Suzuki反应中钯膦配合物的方法(TON高达9800,TOF高达58800 h -1)。详细阐述了该方法用于高产率合成具有呋喃基和噻吩基的杂芳族联芳基的方法。
PYRIDINE COMPOUND SUBSTITUTED WITH AZOLE
申请人:Taisho Pharmaceutical Co., Ltd.
公开号:EP3666766A1
公开(公告)日:2020-06-17
The present invention provides a compound represented by formula [I] shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme.
(in formula [I] above, the structure represented by formula [II] below:
represents any of the structures represented by formula group [III] below:
R1, R2, R3, and R4 independently represent a hydrogen atom, a fluorine atom, methyl, or the like,
R5 represents any of the structures represented by formula group [IV]:
The present invention provides a compound represented by formula [I] shown below or a pharmaceutically acceptable salt thereof that has an inhibitory effect on 20-HETE producing enzyme.
(in formula [I] above, the structure represented by formula [II] below:
represents any of the structures represented by formula group [III] below:
R1, R2, R3, and R4 independently represent a hydrogen atom, a fluorine atom, methyl, or the like, R5 represents any of the structures represented by formula group [IV]:
5-(Naphth-1-yl)- and 5-[(1,1′-biphenyl)-4-yl]isoxazole-3-carbaldehyde oximes: Synthesis, complexes with palladium, and application in catalysis
作者:V. I. Potkin、N. A. Bumagin、V. M. Zelenkovskii、S. K. Petkevich、M. V. Livantsov、N. E. Golantsov
DOI:10.1134/s1070363214090242
日期:2014.9
1-(Naphth-1-yl)- and 1-[(1,1'-biphenyl)-4-yl-3,4,4-trichloro-3-buten-1-ones were synthesized by acylation of naphthalene and biphenyl with 3,4,4-trichloro-3-butenoyl chloride. Further reaction with hydroxylamine led to 5-(naphth-1-yl)- and 5-[(1,1'-biphenyl)-4-yl]isoxazole-3-carbaldehyde oximes. The latter form complexes with palladium, which possess high catalytic activity in the Suzuki reaction in aqueous and aqueous-alcoholic media.
Ambient-Temperature Ortho C–H Arylation of Benzoic Acids with Aryl Iodides with Ligand-Supported Palladium Catalyst
作者:Changlei Zhu、Yuanfei Zhang、Jian Kan、Huaiqing Zhao、Weiping Su
DOI:10.1021/acs.orglett.5b01398
日期:2015.7.17
The ambient-temperature ortho C-H arylation of electron-deficient benzoic acids with aryl iodides has been achieved by using an Ac-Ile-OH-supported Pd catalyst. A wide range of unactivated benzoic adds could cross-couple an array of aryl iodides in moderate to excellent yields: The choice of HFIP as a solvent is crucial to realizing the mild C-H arylation;, and the beneficial effect of the ligand on the reaction likely stems from the accelerated C-H activation process and the improved catalyst lifetime.