1961 年 81 巻 7 号 p. 947-950
The structure of 1-phenethyl-3-cyano-2(1H)-pyridone, reported in Part II of this series, was confirmed as (I) by the route shown in Chart 1. Further, (XII) was synthesized from (I) by the Curtius reaction and, since its diazonium salt was stable, 1-phenethyl-3-substituted-2(1H)-pyridones were prepared by its Sandmeyer reaction. Measurement of dipole moments of these compounds further confirmed the ortho effect of the dipole moment of these 3-substituted 2-pyridones, which had been assumed with small number of examples in the preceding work.