Photochemistry of Aminoketones. XV. Photochemical Acyl Migration in N‐Tosyl‐β‐aminovinyl‐phenyl‐ketonesN‐Tosyl‐β‐aminovinyl‐phenyl‐ketones1a–iare prepared in good yields from β‐chlorovinyl‐ phenyl‐ketones by reaction with the sodium salts of tosyl amides in dry DMF at room temperature. In contrast to the relatively photostable N, N‐dialkyl‐β‐aminovinyl‐aryl‐ketones the electronically excited1give irreversible chemical reactions within a few minutes. Among other not identified photoproducts the α‐tosyl‐β‐aminovinyl‐phenyl‐ketones2were found. From the experimental results it is evident that the migration of the tosyl group prefers a radical‐type two step reaction thro