103030-54-2Relevant academic research and scientific papers
Hydrogen-Bond-Donor Solvents Enable Catalyst-Free (Radio)-Halogenation and Deuteration of Organoborons
Yang, Yi,Gao, Xinyan,Zeng, Xiaojun,Han, Junbin,Xu, Bo
supporting information, p. 1297 - 1300 (2020/12/23)
A hydrogen bond donor solvent assisted (radio)halogenation and deuteration of organoborons has been developed. The reactions exhibited high functional group tolerance and needed only an ambient atmosphere. Most importantly, compared to literature methods, our conditions are more consistent with the principals of green chemistry (e.g., metal-free, strong oxidant-free, more straightforward conditions).
Discotic liquid crystals of transition metal complexes, 53?: Synthesis and mesomorphism of phthalocyanines substituted by m -alkoxyphenylthio groups
Chino, Yoshiaki,Ohta, Kazuchika,Kimura, Mutsumi,Yasutake, Mikio
, p. 159 - 178 (2017/07/11)
We have successfully synthesized a series of novel octakis(m-alkoxyphenylthio)phthalocyaninato copper(II) complexes, (m-CnOPhS)8PcCu (n = 2, 4, 6, 8, 10, 12, 14, 16: 1b～1i), by our developed method to reveal their mesomorphism. The phase transition behavior and mesophase structures have been established by using a polarizing optical microscope, a differential scanning calorimeter, and a temperature-dependent small angle X-ray diffractometer. Interestingly, the very short chain-substituted derivatives, (m-C1OPhS)8PcCu (1a) and (m-C2OPhS)8PCu (1b), show a hexagonal ordered columnar (Colho) mesophase, whereas each of the other longer-chain-substituted derivatives, (m-CnOPhS)8PcCu (n = 4～16: 1c～1i), shows only rectangular ordered columnar (Colro) mesophase(s). In contrast to the present longer-chain-substituted phenylthio derivatives, each of the previous longer-chain-substituted phenoxy derivatives, (m-CnOPhO)8PcCu (n = 10-20), shows a different columnar mesophase of Colho. We discuss this difference of mesomorphism from the viewpoint of the different steric hindrance originated by the peripheral substituents, PhO and PhS groups. Moreover, we could estimate the optical band gaps of (m-C10OPhO)8PcCu and (m-C10OPhS)8PcCu (1f) from absorption edge of the Q-bands to be 1.79 eV and 1.70 eV, respectively. Therefore, the phenylthio-substituted derivative gave a narrower band gap byca. 0.1 eV in comparison with the phenoxy-substituted derivative.
