In 2018,Vile, Gianvito; Richard-Bildstein, Sylvia; Lhuillery, Arnaud; Rueedi, Georg published 《Electrophile, Substrate Functionality, and Catalyst Effects in the Synthesis of α-Mono and Di-Substituted Benzylamines via Visible-Light Photoredox Catalysis in Flow》.ChemCatChem published the findings.COA of Formula: C9H11Br The information in the text is summarized as follows:
Herein, facile and one-pot synthesis of α-mono- and di-substituted benzylamines from cheap and readily available α-amino acids, via photocatalytic decarboxylative arylation in flow is reported. This enables to access intermediates and building blocks that are difficult to obtain via other synthetic routes, but are key for the manufacture of pharmaceuticals, agrochems., and fine chems. The optimal decarboxylative conditions were identified through a high-throughput evaluation of catalysts, organic or inorganic bases, ligands, and reaction parameters (i.e., contact time, temperatures, and photoelectron power). The reaction turned out to be electronically controlled as the yields increased with increasing electron-d. on the aryl moiety. The results were correlated with the redox properties of the photocatalysts, deriving catalyst structure-performance relationships which can facilitate the future identification of even better materials. In addition, compared to traditional batch chem., the use of a flow protocol led to quicker reactions (30 min instead of 12-72 h) and ensured more predictable reaction scale-ups. In the experiment, the researchers used many compounds, for example, 1-Bromo-2-isopropylbenzene(cas: 7073-94-1COA of Formula: C9H11Br)
1-Bromo-2-isopropylbenzene(cas: 7073-94-1) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Some of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties. COA of Formula: C9H11Br
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary