113544-70-0Relevant academic research and scientific papers
Novel functional organic network containing quaternary phosphonium and tertiary phosphorus
Zhang, Qiang,Zhang, Suobo,Li, Shenghai
, p. 2981 - 2988 (2012)
A quaternary phosphonium and tertiary phosphorus functionalized microporous polymer was obtained via nickel(0)-catalyzed Yamamoto-type cross-coupling reaction. The integration ratio of signals (quaternary phosphonium to tertiary phosphorus atoms) was close to 3:2. The polymer networks were stable toward water, base, and acid, and indeed no change in surface area was observed even after the material was treated with 10 M HCl. The pore size distribution calculated by the Horvath-Kawazoe method indicated the presence of micropores with a mean width of about 0.7 and 1.4 nm. Their apparent BET specific surface areas can be tuned (from 650 to 980 m2 g-1) by changing the counteranions (Br- to F-). It displays high intrinsic catalytic activity for the reaction between epoxide and CO2 (yield: 98%, 1 atm). Pd nanoparticles supported on the polymer networks were also prepared, which exhibits high catalytic activity for cross-coupling reaction between 1-chlorobenzene and phenylboronic acid (yield: >95.8%).
Charged porous organic frameworks bearing heteroatoms with enhanced isosteric enthalpies of gas adsorption
Xing, Guolong,Yan, Tingting,Das, Saikat,Ye, Ling,Ye, Kaiqi
, p. 20434 - 20439 (2018/06/11)
Charged porous organic frameworks containing heteroatoms were synthesized via a Yamamoto-type Ullmann coupling reaction using potassium tetrakis(4-bromopyrazolyl)borate and tetrakis(4-chlorophenyl)phosphonium bromide as monomers. For the first time, a mon
