Anthrazoline Photocatalyst for Promoting Esterification and Etherification Reactions via Photoredox/Nickel Dual Catalysis
作者:Xiaolin Zhu、Qiujin Fan、Wei Luo、Danfeng Wang、Yihui Jia、Heyang Li、Zhen Wang、Qi Xiao、Xiaoming He
DOI:10.1002/cjoc.202200663
日期:2023.2.15
readily prepared anthrazoline photocatalyst, which can effectively promote C—O bond formation reactions with the aid of Ni(II) complex. This methodology enables the esterification (36 examples) and etherification (8 examples) with a broad range of scope, allowing aryl and alkyl halides coupled with diverse carboxylic acids/alcohols. Our metal-free photocatalysts have a potential broad application, may
METHOD FOR PRODUCING POLYCARBONATE MATERIAL HAVING EXCELLENT SOLUBILITY AND AFFINITY, AND CONTACT LENS MATERIAL COMPRISING THE SAME
申请人:Suzuki Yasuhiko
公开号:US20120116028A1
公开(公告)日:2012-05-10
According to the present invention, a contact lens material being excellent in oxygen permeability and transparency, being capable of undergoing injection molding, having no water content and having flexibility, as well as a contact lens gel material having excellent oxygen permeability and transparency can be provided. The present invention relates to a contact lens material comprising a polycarbonate resin derived from at least two compounds among compounds represented by a general formula (A), a general formula (B) and a general formula (C), a highly polar molecular weight control modifier (chain terminator) and a compound forming a carbonic acid ester, wherein the compound of the general formula (A) is essentially comprised, and to a production method thereof.
US8501878B2
申请人:——
公开号:US8501878B2
公开(公告)日:2013-08-06
A microwave-assisted highly practical chemoselective esterification and amidation of carboxylic acids
The ubiquitousness of esters and amide functionalities makes their coupling reaction one of the most sought-after organic transformations. Herein, we have described an efficient microwave-assisted synthesis of esters and amides. Soluble triphenylphosphine, in conjugation with molecular iodine, gave the desired products without the requirement for a base/catalyst. In addition, a solid-phase synthetic