Summary A study has been made of the Schmidt reaction on a series of $ xzra-substituted benzophenones, a series of phenyl alkyl ketones, and two unsaturated aralkyl ketones. The ratios of the two isomeric amides formed in each case are nearly independent of para- substituents, but are greatly affected by changes in the steric environment of the carbonyl group. These observations are correlated with existing theory.
![Acetamide, N-(4,5-dihydronaphtho[1,2-d]thiazol-2-yl)- Structure](https://image.chemsrc.com/caspic/487/7496-70-0.png)