have been made accessible in a single step from readily available aldehyde-derived N,N-dialkyl hydrazones and functionalized polyhalomethane derivatives. The process is believed to follow copper-catalyzed cascade C(sp2)–H haloalkylation/C(sp3)–H cyclization/aromatization reaction sequences.
在此,已经可以容易地从醛衍生的N,N-二烷基和官能化的多卤代
甲烷衍
生物中一步获得4-官能化的
吡唑。认为该过程遵循
铜催化的级联C(sp 2)–H卤代烷基/ C(sp 3)–H环化/芳构化反应顺序。