Halobenzenes and Cinnamic Esters

The ratio of attack at the double bond and at the aromatic ring is strongly affected by the reaction medium the nuclear attack increases with the acidity of the medium. The sensitivity to steric effects reduces or prevents the substitution in the ortho positions. 

High yields of tetrahydroquinolines were obtained by intramolecular amination of N-chloro-3-phenylpropylamines 22,32) pq  

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