Zinc‐Mediated Radiosynthesis of Unprotected Fluorine‐18 Labelled α‐Tertiary Amides
作者:Jay S. Wright、Richard Ma、E. William Webb、Wade P. Winton、Jenelle Stauff、Kevin Cheng、Allen F. Brooks、Melanie S. Sanford、Peter J. H. Scott
DOI:10.1002/anie.202316365
日期:2024.1.8
A high-yielding radiofluorination of unprotected α-tertiary haloamides is described. This method provides a new strategy for radiochemists to install fluorine-18 into sterically protected environments for positronemissiontomographyimaging. Preliminary mechanistic studies were leveraged to develop a novel C−H radiofluorination reaction of N-sulphonyloxyamides.
Improved process for synthesis of hindered amine stabilizers for polymeric materials
申请人:The B.F. GOODRICH Company
公开号:EP0062322A1
公开(公告)日:1982-10-13
Process for the synthesis of hindered polysubstituted α-amino acetamides by reaction of a secondary amine with an α-halo acetamide in a basic organic reaction medium and in the presence of a phase transfer catalyst. The product thus obtained can comprise a multifunctional compound having one or more hindered amino moieties. These compounds are highly effective as UV stabilizers in a variety of plastics, especially the alpha monoolefins.