Return to Article Details ANOMALOUS BECKMANN REACTION IN A SERIES OF OXIMES OF 4-ARYL-2,7,7-TRIMETHYL-5-OXO-5,6,7,8-TETRAHYDROQUINOLINES IN POLYPHOSPHORIC ACID. 2. UNEXPECTED SYNTHESIS OF 3'-ETHOXYCARBONYL-4',7',7'-TRIMETHYL-4-OXO-2',6',7',8'-TETRAHYDROSPIRO(CYCLOHEXA- 2, Download Download PDF