939-55-9Relevant academic research and scientific papers
Zinc-catalyzed depolymerization of artificial polyethers
Enthaler, Stephan,Weidauer, Maik
, p. 1910 - 1913 (2012)
Recycling polymers: In the present study, the efficient zinc-catalyzed depolymerization of a variety of artificial polyethers has been investigated. Chloroesters were obtained as the depolymerization products, which are suitable precursors for new polymer
IrIII-Catalyzed direct syntheses of amides and esters using nitriles as acid equivalents: A photochemical pathway
Talukdar, Ranadeep
supporting information, p. 5303 - 5308 (2020/04/17)
An unprecedented IrIII[df(CF3)ppy]2(dtbbpy)PF6-catalyzed simple photochemical process for direct addition of amines and alcohols to the relatively less reactive nitrile triple bond is described herein. Various amides and esters are synthesized as the reaction products, with nitriles being the acid equivalents. A mini-library of different types of amides and esters is made using this mild and efficient process, which uses only 1 mol% of photocatalyst under visible light irradiation (λ = 445 nm). The reaction strategy is also efficient for gram-scale synthesis.
Synthesis of Esters from Stable and Convenient Sulfoxonium Precursors under Catalyst- And Additive-Free Conditions
Wu, Xiao-Feng,Yuan, Yang
, p. 1820 - 1824 (2019/09/09)
A convenient and efficient procedure for the construction of esters from stable sulfoxonium ylides and alcohols has been developed. This protocol presents a broad substrate scope and good yields of the desired esters can be isolated. Notably, no catalyst, oxidant, base or any other additive is required.
A Straightforward Conversion of Activated Amides and Haloalkanes into Esters under Transition-Metal-Free Cs 2 CO 3 /DMAP Conditions
Chen, Liuqing,Gu, Ying,Jian, Junsheng,Liu, Yueping,Miao, Liqiong,Wang, Zijia,Zeng, Zhuo
, p. 4078 - 4084 (2019/10/28)
The esterification of activated amides, N -acylsaccharins, under transition-metal-free conditions with good functional group tolerance has been developed, resulting in C-N cleavage leading to efficient synthesis of a variety of esters in moderate to good yields. This work demonstrates that esterification may proceed by using simple N -acylsaccharins, haloalkanes, and Cs 2 CO 3 as oxygen source.
A Three-Phase Four-Component Coupling Reaction: Selective Synthesis of o-Chloro Benzoates by KCl, Arynes, CO2, and Chloroalkanes
Jiang, Huanfeng,Zhang, Yu,Xiong, Wenfang,Cen, Jinghe,Wang, Lu,Cheng, Ruixiang,Qi, Chaorong,Wu, Wanqing
supporting information, p. 345 - 349 (2019/01/24)
A transition-metal-free three-phase four-component coupling reaction (3P-4CR) involving KCl, arynes, chloroalkanes and CO2 has been reported for the first time, enabling the incorporation of both chloro and CO2 into an aryne simultaneously. The reactions for the synthesis of different types of o-chloro benzoates can be selectively modulated by the chloroalkane utilized. The corresponding products can be alternatively transformed for postsynthetic functionalizations conveniently.
Cross-Dehydrogenating Coupling of Aldehydes with Amines/R-OTBS Ethers by Visible-Light Photoredox Catalysis: Synthesis of Amides, Esters, and Ureas
Pandey, Ganesh,Koley, Suvajit,Talukdar, Ranadeep,Sahani, Pramod Kumar
supporting information, p. 5861 - 5865 (2018/09/21)
A straightforward synthesis of amides, ureas, and esters is reported by visible-light cross-dehydrogenating coupling (CDC) of aldehydes (or amine carbaldehydes) and amines/R-OTBS ethers by photoredox catalysis. The reaction is found to be general and high yielding. A plausible mechanistic pathway has been proposed for these transformations and is supported by appropriate controlled experiments.
Method for generating ester through reaction of acyl chloride and 1,2-dichloroethane
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Paragraph 0021; 0022; 0023; 0024, (2017/08/30)
The invention discloses a method for generating ester through reaction of acyl chloride and 1,2-dichloroethane. The method comprises the following steps: taking acyl chloride, 1,2-dichloroethane and carbonate as reaction substrates, and taking 4-dimethyla
Synthesis and Characterization of Fatty Acid Conjugates of Niacin and Salicylic Acid
Vu, Chi B.,Bemis, Jean E.,Benson, Ericka,Bista, Pradeep,Carney, David,Fahrner, Richard,Lee, Diana,Liu, Feng,Lonkar, Pallavi,Milne, Jill C.,Nichols, Andrew J.,Picarella, Dominic,Shoelson, Adam,Smith, Jesse,Ting, Amal,Wensley, Allison,Yeager, Maisy,Zimmer, Michael,Jirousek, Michael R.
supporting information, p. 1217 - 1231 (2016/02/23)
This report describes the synthesis and preliminary biological characterization of novel fatty acid niacin conjugates and fatty acid salicylate conjugates. These molecular entities were created by covalently linking two bioactive molecules, either niacin
An Effective Method for the Construction of Esters Using Cs2CO3 as Oxygen Source
Ren, Lanhui,Wang, Lianyue,Lv, Ying,Li, Guosong,Gao, Shuang
, p. 5172 - 5175 (2015/11/24)
An effective method for the construction of esters from acyl chloride and halohydrocarbon using Cs2CO3 as an oxygen source was achieved for the first time. The methodology has a wide scope of substrates and can be scaled up. The study of a preliminary reaction mechanism demonstrated that the O in the products comes from Cs2CO3 and this esterification proceeds through a free radical reaction. It was also found that CO2 can also be used in this esterification reaction as an oxygen source.
Synthesis of piperazine derivatives and biological evaluation of its inhibitory activities on vascular smooth muscle cell proliferation
Han, Sheng Hua,Chen, Jian Xin,Liu, Hong Yan,Zhang, Hai Rong,Ma, Peng Fei
, p. 1299 - 1303 (2015/02/19)
A series of new N-substituted benzyl piperazine derivatives were synthesized using the appropriate synthetic route. The new compounds were characterized by IR, 1H NMR, MS and elemental analysis. All the compounds were screened for their inhibitory activities on vascular smooth muscle cell proliferation. Some of the compounds demonstrated moderate to good inhibition of vascular smooth muscle cell proliferation. The compounds (2h, 6h) were approximately equivalent in activity to heparin as a potent inhibitor. The possible structure-activity relationship of the inhibitory activity of all compounds was also discussed.
