Bromination of regioisomeric fluorine-containing ?-aminovinyl ketones
摘要:
Bromination of beta-aminovinyl ketones (AVK) with geminal arrangement of the fluoroalkyl and amino groups gives N-bromo derivatives. Regioisomeric AVK with the amino groups in the beta-position relative to the fluoroalkyl group undergo bromination under analogous conditions to give a mixture of the alpha-bromo and alpha,N-dibromo derivatives. alpha-Bromo derivatives of AVK disproportionate upon storage.