Accelerated Discovery in Photocatalysis by a Combined Screening Approach Involving MS Tags
作者:Michael Teders、Sabrina Bernard、Karin Gottschalk、J. Luca Schwarz、Eric A. Standley、Elodie Decuypere、Constantin G. Daniliuc、Davide Audisio、Frédéric Taran、Frank Glorius
DOI:10.1021/acs.orglett.9b03936
日期:2019.12.6
on the development of an MS tag screening strategy that accelerates the discovery of photocatalytic reactions. By efficiently combining mechanism- and reaction-based screening dimensions, the respective advantages of each strategy were retained, whereas the drawbacks inherent to each screeningapproach could be eliminated. Applying this approach led to the discovery of a mild photosensitized decarboxylative
SYDNONE DERIVATIVES FOR CONJUGATION OF COMPOUNDS OF INTEREST
申请人:UNIVERSITE DE STRASBOURG
公开号:US20170081300A1
公开(公告)日:2017-03-23
The present invention relates to a process for the preparation of a first compound of interest C1 functionalized with a sydnone compound and to the corresponding functionalized C1 compound of interest. The present invention also relates to a process for the preparation of a conjugate of two compounds of interest C1 and C2 implying a sydnone compound and to the obtained conjugate. The present invention also relates to a process for preparing a compound of interest C2 comprising a strained alkyne moiety functionalized with a sydnone and to the corresponding functionalized compound of interest C2. It also relates to novel sydnone compounds substituted in position 4, which may be used in the above processes.
Alkylation of mesoionic ring systems with triethyloxonium fluoroborate
作者:K. T. Potts、E. Houghton、S. Husain
DOI:10.1039/c29700001025
日期:——
Ethylation of the exocyclic oxygen atom in several five-membered mesoionicringsystems occurred readily with triethyloxonium fluoroborate.
氟硼酸三乙基氧鎓很容易在几个五元中性离子环系统中发生环外氧原子的乙基化。
Structure of the Sydnones
作者:J. KENNER、KATHLEEN MACKAY
DOI:10.1038/158909b0
日期:1946.12
THE communication from Prof. Wilson Baker and his collaborator1 prompts us to intimate that we also have concerned ourselves with the sydnones, but from the point of view that their formation might be related to the racemization of ñ-acetylaminocarboxylic acids by acetic anhydride. Bergmann and Zervas2 adduced evidence that this change depended on enolization of the anhydro-compound to I.
In this article, we report the synthesis of sydnonimines from sydnones and their use as dipoles for fast click-and-release reactions. The process relies on nucleophilic aromatic substitution of aliphatic and aromatic amines with triflated sydnones. This new methodology allowed the preparation of functionalised sydnonimine probes that are otherwise difficult to prepare. These probes were then used to