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同系线性规律定量地证明了,在3-(N-甲基-N-β-萘基氨基)丙烯醛(1)分子中,萘环竞争氮的孤对p电子的能力与丙烯醛(即,甲酰乙烯基)相当;在5-(N-甲基-N-β-萘基氨基)-2,4-戊二烯醛(2)分子中,戊二烯醛(即,甲酰丁二烯基)的竞争力大于萘环,氮主要与戊二烯醛共轭.X射线晶体结构数据表明,在1中,萘环平面与氮架平面之间的两面角τ_1=33.8°;在2中,τ_2=31.4°.按照通常概念,既然在1中,氮与萘环之间的共轭效应比在
Homologous linearity quantitatively demonstrates that the ability of the naphthalene ring to compete for the nitrogen-bound lone pair p-electrons of 3- (N-methyl-N-beta-naphthylamino) acrolein (1) Formyl vinyl); in the molecule of 5- (N-methyl-N-β-naphthylamino) -2,4-pentadienal (2), pentadienal Alkenyl) is more competitive than naphthalene ring, and nitrogen is mainly conjugated with pentadienal.X-ray crystal structure data show that in 1, the dihedral angle between the naphthalene ring plane and the nitrogen frame plane τ_1 = 33.8 °; at 2 , Τ_2 = 31.4 ° According to the general concept, since in 1, the conjugate effect between nitrogen and naphthalene ring is better than that in