Thermodynamic favorable CO2 conversion via vicinal diols and propargylic alcohols: A metal-free catalytic method
作者:Li-Hua Han、Jing-Yuan Li、Qing-Wen Song、Kan Zhang、Qian-Xia Zhang、Xiao-Fang Sun、Ping Liu
DOI:10.1016/j.cclet.2019.06.030
日期:2020.2
promising field in chemical fixation of CO2. Herein, a facile metal-free strategy was reported for the one-pot preparation of cyclic carbonates and α-hydroxy ketones from vicinaldiols, propargylic alcohols and CO2. Wide scope of vicinaldiols and propargylic alcohols was demonstrated to be efficient under the DBU-catalyzed conditions. A plausible mechanism was proposed, which included detailed main and side
Microwave assisted synthesis of cyclic carbonates from olefins with sodium bicarbonates as the C1 source
作者:Xiaoqing Yang、Jie Wu、Xianwen Mao、Timothy F. Jamison、T. Alan Hatton
DOI:10.1039/c4cc00252k
日期:——
An effective transformation of alkenes into cyclic carbonates has been achieved using NaHCO3 as the C1 source in acetone–water under microwave heating, with selectivities and yields significantly surpassing those obtained using conventional heating.
Intramolecular etherification of five-membered cyclic carbonates bearing hydroxyalkyl groups
作者:Karolina M. Tomczyk、Piotr A. Guńka、Paweł G. Parzuchowski、Janusz Zachara、Gabriel Rokicki
DOI:10.1039/c2gc35265f
日期:——
We report a new one-pot syntheticroute to tetrahydrofuran derivatives, which were unexpectedly produced under basic conditions by intramolecular etherification of substituted five-membered cyclic carbonates. For alcohols with vicinal hydroxyl groups, and additional OH groups at the β-position, intramolecular etherification leading to 3-hydroxytetrahydrofuran derivatives was observed. These reactions