1956 年 76 巻 3 号 p. 279-282
Examination of the mutual relationship between the four methyl ketone compounds reported in the preceding paper revealed that the α-methyl ketone compound (α-III) underwent facile isomerization to α-allomethyl ketone compound (α-allo-III) and that the β-methyl ketone compound (β-III) similarly underwent isomerization to β-allomethyl ketone compound (β-allo-III). It was found that (α-allo-III) can be derived to (β-allo-III) by the kainic inversion and vice versa by retrokainic inversion. These facts show that these four methyl ketone compounds are all steric isomers.