In an earlier communication'the results of a preliminary study of the cyclization of p- anilinopropionic acids to 4-keto-1, 2, 3, 4-tetrahydroquino-line derivatives, as first noted by Clemo and Perkin, 2 were reported. In view of the ready availability of such acids by addition of aromatic amines to ethyl acrylate or acrylonitrile this scheme offers attractive possibilities for the synthesis of 4-hydroxy-and 4-chloroquinolines which have recently assumed ...
