Anti‐corrosive property of bioinspired environmental benign imidazole and isoxazoline heterocyclics: A cumulative studies of experimental and DFT methods
作者:Sowmya Ramkumar、D. Nalini、Mumtaz A. Quraishi、Eno E. Ebenso、Chandrabhan Verma
DOI:10.1002/jhet.3752
日期:2020.1
differing in the nature of methoxy (‐OCH3) and aromatic (phenyl and naphthyl) moieties are synthesized, characterized and evaluated as corrosion inhibitors for mild steel in acidicsolution of 1 M HCl. Results showed that imidazoline based heterocyclic compounds are better corrosion inhibitors than isoxazoline based heterocyclics and both classes of compounds showed inhibition efficiency of more than 85% at
在本研究中,合成了四个咪唑啉(IDZ)和四个异恶唑啉(ISO)杂环,它们在甲氧基(-OCH 3)和芳香族(苯基和萘基)部分的性质上不同,并作为酸性低碳钢的腐蚀抑制剂进行了表征和评估1 M HCl溶液。结果表明,基于咪唑啉的杂环化合物比基于异恶唑啉的杂环具有更好的腐蚀抑制剂,并且这两类化合物在20 mgL -1时的抑制效率均超过85%。专注。结果进一步表明,与不含这些部分的抑制剂相比,含有甲氧基,苯基和萘基部分的抑制剂显示出更高的保护效率。PDP研究表明,研究的IDZ和ISO充当混合型抑制剂,它们在金属表面的吸附遵循Langmuir吸附等温线模型。所有实验结果均通过基于密度泛函理论(DFT)的量子化学计算得到证实。针对中性以及质子化形式的IDZ和ISO计算了许多基于DFT的指数,以便更好地了解金属IDZ / ISO的相互作用。DFT分析的结果表明,与它们的中性形式相比,所有抑制剂的质子化(阳离子)形式都更强烈地吸附在金属表面上。
Hypoglycemic imidazoline compounds
申请人:ELI LILLY AND COMPANY
公开号:EP1266897A3
公开(公告)日:2003-12-03
This invention relates to certain novel imidazoline compounds and analogues thereof, to their use for the treatment of diabetes, diabetic complications, metabolic disorders, or related diseases where impaired glucose disposal is present, to pharmaceutical compositions comprising them, and to processes for their preparation.The compounds have the following formula: whereinX is -O-, -S-, or -NR5-;R5 is hydrogen, C1-8 alkyl, or an amino protecting group;R4 isY is -O-, -S-, or -NR8-;Y' is -O- or -S-;
Palladium(0)-Catalyzed, Copper(I)-Mediated Coupling of Cyclic Thioamides with Alkenylboronic Acids, Organostannanes, and Siloxanes
作者:Nuzhat Arshad、Jamshed Hashim、C. Oliver Kappe
DOI:10.1021/jo900848s
日期:2009.7.17
The Pd-catalyzed cross-coupling of cyclic thioamides and thioureas with alkenylboronic acids, vinyl- and (het)arylstannanes, and arylsiloxanes in the presence of stoichiometric amounts of a Cu(I) cofactor is described. The desulfitative C−C cross-coupling protocol of the Liebeskind−Srogl type is performed under neutral conditions and can be applied to a range of heterocyclic structures with embedded