So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Nakamura, Itaru; Kudo, Yu; Araki, Toshiharu; Zhang, Dong; Kwon, Eunsang; Terada, Masahiro researched the compound: Chloro(1,5-cyclooctadiene)copper(I) dimer( cas:32717-95-6 ).Recommanded Product: 32717-95-6.They published the article 《Copper-catalyzed skeletal rearrangement of O-propargylic aryloximes into four-membered cyclic nitrones – chirality transfer and mechanistic insight》 about this compound( cas:32717-95-6 ) in Synthesis. Keywords: aryl oxime propargyl ether regioselective rearrangement copper catalyst; azetidine cyclic nitrone preparation. We’ll tell you more about this compound (cas:32717-95-6).
Cu-catalyzed skeletal rearrangement of (E)-configurated O-propargylic aryl oximes were carried out to afford the corresponding 4-membered cyclic nitrones in good to excellent yields. The optimal reaction conditions of the highly regioselective reactions involved the use of [CuCl(cod)]2 in MeCN at 70°. In the case of (Z)-configurated derivatives, however, the reaction proceeded in the absence of the Cu catalysts to afford the identical compound in good yields. Furthermore, the reactions were also carried out using chiral substrates in the presence of Cu catalysts to afford the corresponding products with good levels of chirality transfer.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider