Cellulose supported TiO < sub > 2 < /sub > /Cu < sub > 2 < /sub > O for highly asymmetric conjugate addition of α,β-unsaturated compounds in aqueous phase

Int J Biol Macromol. 2024 Apr 19:131205. doi: 10.1016/j.ijbiomac.2024.131205. Online ahead of print.ABSTRACTA series of new kind green cellulose-supported bimetallic TiO2/Cu2O (Cell@TiO2/Cu2O) catalytic materials were obtained by in-situ reduction method employing cellulose as the carrier. The effects of metal percentage composition on the morphology and construction of the catalytic materials were systematically investigated. The Cell@TiO2/Cu2O were characterized by FT-IR, TG, XPS, SEM, TEM, EDS, and the element content was obtained by elemental analysis. Then, the achieved catalytic materials were applied to the chiral borylation reaction of α,β-unsaturated compounds, including nitrile compounds, esters, and α,β-unsaturated ketones. Remarkably, this approach provides an efficient strategy to gain an important class of chiral organic boron compounds with target chiral products in high yields as well as enantioselectivities. Besides, the Cell@TiO2/Cu2O could be easily recycled and effectively reused. This work constructed bimetallic TiO2/Cu2O on cellulose as a newly catalyst to obtain chiral boron compounds in aqueous phase.PMID:38643922 | DOI:10.1016/j.ijbiomac.2024.131205

Source: International Journal of Biological Macromolecules - April 21, 2024 Category: Biochemistry Authors: Yaoyao Zhang Haifeng Guo Chengpeng Fu Weishuang Li Bojie Li Lei Zhu Source Type: research