Visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoacetates: An approach to 2,3-dihydrobenzofuran derivatives
Visible
<scp>Light‐Promoted</scp>
Sulfoxonium Ylides Synthesis from Aryl Diazoacetates and Sulfoxides
作者:Juan Lu、Lei Li、Xiang‐Kui He、Guo‐Yong Xu、Jun Xuan
DOI:10.1002/cjoc.202100064
日期:2021.6
A visible light-promoted reaction of donor/acceptor diazoalkanes with sulfoxides towards the synthesis of synthetically useful sulfoxonium ylides was reported. The reaction occurred under sole visible light irradiation without the need of any transition-metals or additives, affording the corresponding sulfoxonium ylides in moderate to good yields. The success of late-stage modification of natural isolates
2,2,6,6-Tetramethylpiperidinium triflate (TMPT): a highly selective and self-separated catalyst for esterification
作者:Lan Gao、Taoping Liu、Xiaochun Tao、Yongmin Huang
DOI:10.1016/j.tetlet.2016.09.061
日期:2016.11
An eco-friendly and readily accessible 2,2,6,6-tetramethylpiperidinium triflate was found as highly-selective and self-separated catalyst for esterification under solvent-free condition. The X-ray crystallography revealed that it formed a ‘hydrophobic wall’ which could effectively eliminate the generated water from the reactive sites. Moreover, it could precipitate from the reaction system with excellent
The carbon material functionalized with NH<sub>2</sub><sup>+</sup> and SO<sub>3</sub>H groups catalyzed esterification with high activity and selectivity
作者:Shaoqi Zhan、Xiaochun Tao、Liangzhen Cai、Xiaohui Liu、Taoping Liu
DOI:10.1039/c4gc01395f
日期:——
A novel carbon material was prepared conveniently, which can catalyze the esterification reaction with high reactivity and selectivity.
一个新型碳材料被方便地制备出来,可以催化酯化反应,具有高反应活性和选择性。
α-Substituted Malonester Amides: Tools To Define the Relationship between ACAT Inhibition and Adrenal Toxicity
作者:Drago R. Sliskovic、Joseph A. Picard、Patrick M. O'Brien、Peggy Liao、W. Howard Roark、Bruce D. Roth、Maureen A. Anderson、Sandra Bak Mueller、Thomas M. A. Bocan、Richard F. Bousley、Katherine L. Hamelehle、Reynold Homan、James F. Reindel、Richard L. Stanfield、Daniel Turluck、Brian R. Krause
DOI:10.1021/jm970560h
日期:1998.2.1
evaluated for their ability to inhibitacyl-CoA:cholesterolO-acyltransferaseactivity in vitro and to lower plasma total cholesterol levels in a variety of cholesterol-fed animal models. Compounds of this series were also useful in examining the relationship between adrenal toxicity and ACAT inhibition. One compound from this series, 9f, was a potent inhibitor of ACAT in both the microsomal and cellular
All‐Carbon Tetrasubstituted Olefins Synthesis from Diazo Compounds and Iodonium Ylides under Blue LED Irradiation
作者:Yan‐Rui Zhao、Lei Li、Guo‐Yong Xu、Jun Xuan
DOI:10.1002/adsc.202101144
日期:2022.2
tetra-substituted olefins through visible-light promoted coupling of diazo compounds with iodonium ylides was developed. A wide range of all-carbon tetra-substituted olefins was obtained in moderate to good yields. The synthetic values of the current method were further approved by the synthesis of natural isolates modified alkenes and the successful transformation of final olefins into important heterocycles