Deep eutectic solvent-catalyzed arylation of benzoxazoles with aromatic aldehydes
作者:Phuong Hoang Tran、Anh-Hung Thi Hang
DOI:10.1039/c8ra01094c
日期:——
A novel and efficient methodology for the arylation of benzoxazoles with aromaticaldehydes catalyzed by deep eutectic solvent has been developed. The reaction smoothly proceeded with a wide range of substrates to give the desired products in high yields within short reaction time. Deep eutectic solvents are easily recovered and reused without significant loss of catalytic activity.
Phosphonium acidic ionic liquid: an efficient and recyclable homogeneous catalyst for the synthesis of 2-arylbenzoxazoles, 2-arylbenzimidazoles, and 2-arylbenzothiazoles
作者:Quang The Nguyen、Anh-Hung Thi Hang、Thuy-Linh Ho Nguyen、Duy-Khiem Nguyen Chau、Phuong Hoang Tran
DOI:10.1039/c8ra01709c
日期:——
A highly efficient and green strategy for the synthesis of 2-arylbenzoxazoles, 2-arylbenzimidazoles, and 2-arylbenzothiazoles catalyzed by phosphonium acidic ionic liquid has been developed via the condensation of o-aminophenol, o-phenylenediamines, and o-aminothiophenol, respectively, with aldehydes. The reaction has a good yield, the broad substrate scope, and mild condition. Triphenyl(butyl-3-s
分别通过邻氨基苯酚、邻苯二胺和邻氨基苯硫酚的缩合,开发了一种由鏻酸性离子液体催化合成 2-芳基苯并恶唑、2-芳基苯并咪唑和 2-芳基苯并噻唑的高效绿色策略,与醛。该反应收率好,底物范围广,条件温和。三苯基(丁基-3-磺酰基)鏻甲苯磺酸盐催化剂通过一锅法合成很容易从廉价且可用的起始材料中获得。其结构经1 H NMR、13 C NMR、31P NMR和FT-IR技术。热稳定性和酸度等其他性质采用TGA和Hammett酸度函数法测定。有趣的是,催化剂在第四次复苏之前仍能保持其持续的出色表现。
A new superacid hafnium-based metal–organic framework as a highly active heterogeneous catalyst for the synthesis of benzoxazoles under solvent-free conditions
作者:Linh H. T. Nguyen、The T. Nguyen、Ha L. Nguyen、Tan L. H. Doan、Phuong Hoang Tran
DOI:10.1039/c7cy01668a
日期:——
A new superacid Hf-based MOF, termed VNU-11-P-SO4, was used as an efficient heterogeneous catalyst for solvent-free 2-arylbenzoxazole synthesis.
Substituted heteroaryl- and phenylsulfamoyl compounds
申请人:Hamanaka S. Ernest
公开号:US20050228015A1
公开(公告)日:2005-10-13
The present invention is directed at substituted heteroaryl- and phenylsulfamoyl compounds, pharmaceutical compositions containing such compounds and the use of such compounds as peroxisome proliferator activator receptor (PPAR) agonists. PPAR alpha activators, pharmaceutical compositions containing such compounds and the use of such compounds to elevate certain plasma lipid levels, including high density lipoprotein-cholesterol and to lower certain other plasma lipid levels, such as LDL-cholesterol and triglycerides and accordingly to treat diseases which are exacerbated by low levels of HDL cholesterol and/or high levels of LDL-cholesterol and triglycerides, such as atherosclerosis and cardiovascular diseases, in mammals, including humans. The compounds are also useful for the treatment of negative energy balance (NEB) and associated diseases in ruminants.
Substituted Heteroaryl- and Phenylsulfamoyl Compounds
申请人:Hamanaka S. Ernest
公开号:US20060258723A1
公开(公告)日:2006-11-16
The present invention is directed at substituted heteroaryl and phenylsulfamoyl compounds, pharmaceutical compositions containing such compounds and the use of such compounds as peroxisome proliferator actuator receptor (PPAR) agonists. PPAR alpha activators, pharmaceutical compositions containing such compounds and the use of such compounds to elevate certain plasma lipid levels, including high density lipoprotein-cholesterol and to lower certain other plasma lipid levels, such as LDL-cholesterol and triglycerides and accordingly to treat diseases which are exacerbated by low levels of HDL cholesterol and/or high levels of LDL-cholesterol and triglycerides, such as atherosclerosis and cardiovascular diseases, in mammals, including humans. The compounds are also useful for the treatment of negative energy balance (NEB) and associated diseases in ruminants.