作者:Volkan Taşdemir、Burak Kuzu、Meltem Tan、Hasan Genç、Nurettin Menges
DOI:10.1055/s-0037-1610859
日期:2019.2
propargyl groups into oxime groups. N-Propargyl monooxime imidazole derivatives were cyclized by treatment with CuI to give various imidazopyrazine N-oxides. Several copper salts, such as CuOAc, CuSO4, and CuOTf, formed the same cyclization product. This cyclization reaction occurred only in the presence of Cu(I) or Cu(II) salts; other transition metals such as Au, Ag, In, and Fe did not yield cyclic products
N-Propargyl-2-aroylimidazoles 合成并转化为相应的酮肟。在各种条件下,通过将羰基或羰基和炔丙基转化为肟基团,形成了几种单和二酮肟咪唑衍生物。N-炔丙基单肟咪唑衍生物通过用CuI处理而环化,得到各种咪唑并吡嗪N-氧化物。几种铜盐,如 CuOAc、CuSO4 和 CuOTf,形成相同的环化产物。这种环化反应仅在 Cu(I) 或 Cu(II) 盐存在下发生;其他过渡金属如 Au、Ag、In 和 Fe 没有产生环状产物。使用核无关化学位移法计算双环的芳香性。