2213-63-0, Name is 2,3-Dichloroquinoxaline, belongs to quinoxaline compound, is a common compound. Computed Properties of C8H4Cl2N2In an article, once mentioned the new application about 2213-63-0.
Bis-(2,5-diphenylphospholanes) with sp2 carbon linkers: Synthesis and application in asymmetric hydrogenation
(Chemical Equation Presented) Four chiral diphosphine ligands consisting of bis(2,5-diphenylphospholan-1-yl) groups connected by the sp2 carbon linkers 2,3-quinoxaline ((S,S)-Ph-Quinox), 2,3-pyrazine ((S,S)-Ph-Pyrazine), maleic anhydride ((S,S)-Ph-MalPhos), and 1,1?-ferrocene ((S,S)-Ph-5-Fc) were synthesized, and their cationic [rhodium-(I)(COD)] complexes were prepared. These complexes were tested in asymmetric hydrogenation of functionalized olefins. [((S,S)-Ph-Quinox)Rh(COD)]BF4 showed high activity and selectivity against itaconate and dehydroamino acid substrates. The corresponding (S,S)-Ph-Pyrazine and (S,S)-Ph-MalPhOS complexes exhibited lower activities and selectivities. [((S,S)-Ph-S-Fc)Rh(COD)]BF4 showed high activity with low selectivity for these substrates, but high activity and selectivity against 2-C-substituted cinnamate salts, whereas rhodium complexes of (S,S)-Ph-Quinox and (R,R)-Ph-BPE showed low activity and selectivity against 2-C-substituted cinnamate salts.
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Reference£º
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1330 | ChemSpider