Synthesis of α-acyloxy ethers via direct esterification of carboxylic acids with ethers under metal-organic framework catalysis
作者:Phuong T.M. Ha、Thuan D. Le、Son H. Doan、Tung T. Nguyen、Nhan T.H. Le、Nam T.S. Phan
DOI:10.1016/j.tet.2017.08.040
日期:2017.10
verified, and α-acyloxy ethers were not produced via the contribution of leached iron species. The framework catalyst was reutilized many times for the transformation without a remarkable decline in catalytic activity. According to our best knowledge, this is the first heterogeneous catalytic approach towards the synthesis of α-acyloxy ethers via direct esterification of carboxylicacids with C(sp3)H bonds
Unexpected Copper-Catalyzed Aerobic Oxidative Cleavage of C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Bond of Glycol Ethers
作者:Zhong-Quan Liu、Lixing Zhao、Xiaojie Shang、Zili Cui
DOI:10.1021/ol301220s
日期:2012.6.15
An unexpected Cu-catalyzed oxidative cleavage of the C(sp(3))-C(sp(3)) bond in glycol ethers by using air or molecular oxygen as the terminal stoichiometric oxidant is demonstrated. As a result, the corresponding alpha-acyloxy ethers and formates of 1,2-ethanediol are formed by direct coupling of carboxylic acids and aldehydes with glycol ethers under the reaction conditions. This method represents the first example of Cu-catalyzed aerobic cleavage of saturated C-C bond in ethers.