Triplet Energy Transfer Mechanism in Copper Photocatalytic <i>N</i>‐ and <i>O</i>‐Methylation
作者:Martijn Hoving、Jacob‐Jan Haaksma、Anne Stoppel、Lukas Chronc、Jonas Hoffmann、Sebastian B. Beil
DOI:10.1002/chem.202400560
日期:2024.4.16
We investigated the photochemical energy transfer mechanism of hypervalent iodine reagents. When coupled to copper catalysis we achieved successful methylation of a diverse set of N-heterocycles and (hetero−)aromatic carboxylic acids. In addition, we could show application of this methodology to more complex active pharmaceuticalintermediates. Mechanistic investigations support our observations and
POLYARYLENE COMPOSITIONS HAVING ENHANCED FLOW PROPERTIES
申请人:Solvay Specialty Polymers USA, LLC.
公开号:EP2328963B1
公开(公告)日:2016-04-06
Thermally stabilized polyarylene compositions
申请人:Sriram Suresh
公开号:US20110144223A1
公开(公告)日:2011-06-16
A polyarylene composition containing one or more polyarylenes and one or more sterically hindered phenolic stabilizers. The polyarylene composition has enhanced resistance to discoloration and degradation under thermal stress.
Polyarylene compositions having enhanced flow properties
申请人:Sriram Suresh
公开号:US20110144252A1
公开(公告)日:2011-06-16
Polyarylene compositions including one or more organic substances. The organic substances can be selected from the group consisting of a paraffin, an olefin, an olefin oligomer, an alkoxylated acyclic carboxylic acid, an alkoxylated acyclic carboxylic acid amide, an acyclic carboxylic acid, an acyclic carboxylic acid ester, an acyclic carboxylic acid alkali metal salt, an acyclic carboxylic acid amide, an alkoxylated acyclic alcohol, an acyclic alcohol, an alkoxylated alkyl phenol and an alkyl phenol. The organic substances provide improved processability. Further inclusion of a sterically hindered phenol provides tougher polyarylene compositions.