In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis and characterization of chiral Cu(I) complexes of substituted pyrrolidine ligands. Efficient catalysts for cyclopropanation reactions, published in 1996-03-15, which mentions a compound: 32717-95-6, mainly applied to chiral copper complex substituted pyrrolidine catalyst; cyclopropanation catalyst chiral copper substituted pyrrolidine; styrene cyclopropanation chiral copper substituted pyrrolidine, COA of Formula: C16H16Cl2Cu2.
A series of new copper(I) complexes of chiral bidentate N,N’-ligands ((S)-2-t-butylaminocarbonylpyrrolidine, (S)-1,2-(bis-t-butyl-aminocarbonyl)pyrrolidine, (S)-1-t-butylaminocarbonyl-2-(1-naphthylaminocarbonyl)pyrrolidine, (S)-1-t-butylaminocarbonyl-2-(1-naphthylaminomethyl)pyrrolidine, (2S,4S)-1,2-(bis-t-butylaminocarbonyl)-4-aminopyrrolidine) of general formula [Cu(CH3CN)(L-L)]X (X = PF6, ClO4) have been synthesized and fully characterized by elemental anal., IR, electronic and NMR spectroscopy. These complexes catalyze the cyclopropanation of styrene, used as a model for monosubstituted olefins, with Et diazoacetate to yield a mixture of cis/trans Et 2-phenylcyclopropan-1-carboxylates with up to 30% ee.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider