A series of m- and p-substituted 1-phenyl, 1-benzyl, 1-benzoyl, and 1-(2-phenylethyl)pyrroles was prepared and their 1H and 13C nmr spectroscopic characteristics were examined. In general, good correlations were observed between the chemical shift values of the βH and the βC of pyrroles [except 1-(2-phenylethyl)pyrroles] and the Hammettt σ. The observation may be explained in terms of the electronic
一系列的米-和p -取代的1-苯基,1-苄基,1-苯甲酰基,和1-(2-苯乙基)
吡咯制备和它们的1 H和13 C NMR光谱特性进行了研究。一般情况下,被所述β的
化学位移值之间观察到良好的相关性H和β
吡咯C [除了1-(2-苯乙基)
吡咯]和Hammetttσ。可以用取代基的电子效应来解释该观察结果,所述取代基通过
吡咯环的βCs与m-和p之间的p轨道相互作用通过键和空间传输。苯环的Cs。还给出了苯环的1 H和13 C
化学位移的1-
吡咯基,1-
吡咯基甲基和1-
吡咯基取代基常数。