1. J. Blass, Bull. Soc. Chim. France, 3120 (1966).
2. S. Umio, K. Kariyone, K. Tanaka, and H. Noguchi, Japanese Patent, 68/13,206, June 4, 1968;
3. Chem. Abstr., 70, 29302 (1969).
4. Syntheses in the isoquinoline series. Synthesis of 2,3-dihydro-4(1H)-isoquinolones