Synthesis of Functionalized Ketones from Acid Chlorides and Organolithiums by Extremely Fast Micromixing
作者:Aiichiro Nagaki、Kengo Sasatsuki、Satoshi Ishiuchi、Nobuyuki Miuchi、Masahiro Takumi、Jun‐ichi Yoshida
DOI:10.1002/chem.201900743
日期:2019.4
Synthesis of ketones containing various functional groups from acid chlorides bearing electrophilic functional groups and functionalized organolithiums was achieved using a flow microreactor system. Extremely fast mixing is important for high chemoselectivity.
A phosphine-free, heterogeneous palladium-catalyzed atom-efficient carbonylative cross-coupling of triorganoindiums with aryl halides leading to unsymmetrical ketones
作者:Shengyong You、Ruian Xiao、Haiyi Liu、Mingzhong Cai
DOI:10.1039/c7nj02969a
日期:——
The first phosphine-free heterogeneous palladium-catalyzed carbonylative cross-coupling of arylhalides with triorganoindiums has been developed that proceeds smoothly under 1 or 2.5 atm of carbon monoxide in THF at 68 °C and provides a general and powerful tool for the synthesis of various valuable unsymmetrical ketones with high atom-economy, good yield, and recyclability of the catalyst. Our system
A series of substituted 1,4-benzenediboronic acids (BDBA) was synthesized and their thermal properties investigated. Two diboronic acids were studied as building-blocks for covalent organic framework (COF) formation, namely 2,5-dimethoxy-1,4-benzenediboronic acid and 2-nitro-1,4-benzeneboronic acid. Interestingly, substitution of the BDBA core caused a dramatic decrease of the polymerization temperature leading to the formation of a less organized structure.