427879-56-9Relevant academic research and scientific papers
Use of precipitons for copper removal in atom transfer radical polymerization [1]
Honigfort, Mical E.,Brittain, William J.,Bosanac, Todd,Wilcox, Craig S.
, p. 4849 - 4851 (2007/10/03)
The use of precipitons for copper removal in atom transfer radical polymerization (ATRP) was discussed. Nitrogen ligands bearing precipitons were prepared and used to mediate ATRP. The results showed that the precipiton-bound ligands successfully mediated
A photoactivated precipiton for reagent sequestration in solution-phase synthesis
Bosanac, Todd,Wilcox, Craig S.
, p. 4194 - 4195 (2007/10/03)
Precipitons are molecular phase tags for chemical separations. They can be switched from a high-solubility to a low-solubility state to facilitate product, reagent, or catalyst isolation. This paper presents the first photoactivated precipiton and demonstrates that this precipiton is an efficient amine scavenging agent in solution-phase syntheses of amides, ureas, and imines. This approach to amine scavenging offers advantages over solid-phase scavenging methods. The amine is captured in a homogeneous medium, so the capture is much faster than seen with isocyanate resins, and only a small excess of the scavenger is required. Copyright
