96396-91-7Relevant articles and documents
AgX@carbon (X = Br and I) as robust and efficient catalysts for the reaction of propargylic alcohols and CO2 to carbonates under ambient conditions
Qiu, Jikuan,Zhao, Yuling,Wang, Huiyong,Cui, Guokai,Wang, Jianji
, p. 54020 - 54026 (2016)
Development of new efficient catalytic systems for chemical transformation of CO2 is a very attractive topic in green chemistry. In this work, we studied the synthesis of α-alkylidene cyclic carbonates through the coupling reaction between propargylic alcohols and CO2 with new silver catalysts. It was found that activated carbon supported AgX (X = Br and I) was a simple and efficient catalyst for the carboxylative cyclization of propargyl alcohols with CO2 at atmospheric pressure and room temperature. Nearly 99% yield of the desired product was obtained, and the product could be simply separated through solvent extraction. Moreover, the catalyst could be easily recovered and reused at least ten times without a decrease in the catalytic activity and selectivity. These findings are useful for the development of an environmentally friendly chemical process for the production of α-alkylidene cyclic carbonates.
Synthesis Cu(I)–CN-based MOF with in-situ generated cyanogroup by cleavage of acetonitrile: Highly efficient for catalytic cyclization of propargylic alcohols with CO2
Han, Qiuxia,Huang, Laikuan,Jiao, Jiachen,Li, Mingxue,Shi, Zhuolin,Xiao, Yang
, (2020/09/17)
Developing a highly effective process for synthesis a cyano-bridged compound to avoid toxic organic or inorganic cyanides is very significant method for alleviating cyanides pollution. Here, a CN-based MOF catalyst (Cu(I)–CN–BPY) was synthesized by using copper ions coupled with Na4W10O32 in CH3CN under solvothermal conditions. The cyano-groups are generated in situ from the cleavage of C(sp3)–C(sp) in CH3CN. Because Cu(I) sites have ability to activate π-activate internal alkynes of carbon–carbon triple bonds for carboxylic cyclization reactions, which was applied in the cyclization of propargylic alcohols with CO2 and exhibited high efficiency with >95 % yields. For seeking out the active sites of MOF structure in carboxylic cyclization, we also synthesized two MOFs of Cu(I)–Cl–BPY and Cu(I)–I–BPY, and investigated for this reaction.
A rose bengal-functionalized porous organic polymer for carboxylative cyclization of propargyl alcohols with CO2
Yu, Xiaoxiao,Yang, Zhenzhen,Zhang, Fengtao,Liu, Zhenghui,Yang, Peng,Zhang, Hongye,Yu, Bo,Zhao, Yanfei,Liu, Zhimin
supporting information, p. 12475 - 12478 (2019/10/23)
A Rose bengal-functionalized porous organic polymer (RB-POP) was prepared with a specific surface area of up to 562 m2 g-1. In the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene, RB-POP supported Ag(0) nanoparticles exhibited excellent performance for catalyzing cyclization of propargyl alcohols with CO2 at 30 °C, achieving a TOF of 5000 h-1, the highest value among the reported ones.
