Selective Transformation of Vicinal Glycols to α-Hydroxy Acetates in Water via a Dehydrogenation and Oxidization Relay Process by a Self-Supported Single-Site Iridium Catalyst
作者:Lingyun Shen、Zhe-Ning Chen、Qingshu Zheng、Jiajie Wu、Xin Xu、Tao Tu
DOI:10.1021/acscatal.1c04354
日期:2021.11.5
and biodegradable polymers, but their conventional syntheses are usually restricted to aromatic substrates, especially, in a stepwise manner. Herein, we disclose the transformation of alkyl and aryl vicinal glycols to α-hydroxy acetates in water under the air atmosphere with our solid self-supported NHC-Ir single-site catalyst. Both aliphatic and aromatic glycols are compatible with a much higher catalytic
A Highly Regioselective Palladium-Catalyzed O,S Rearrangement of Cyclic Thiocarbonates
作者:William Mahy、Sinéad Cabezas-Hayes、Gabriele Kociok-Köhn、Christopher G. Frost
DOI:10.1002/ejoc.201701181
日期:2017.11.24
This work describes an operationally simple catalytic synthesis of cyclic S-thiocarbonates with predictable regioselectivity in good yields. The reaction utilizes substrates derived from ubiquitous 1,2-diols in an atom economical intramolecular rearrangement, catalysed by an inexpensive and simple catalyst–ligand system. A crystal structure is presented that clearly confirms the regioselectivity of