1. Isatoic Anhydride. III. Reactions with Primary and Secondary Amines
2. (b) J. C. Watts, U. S. Patent 3,244,503 (1966);
3. (c) M. Kurihara and N. Yoda, Tetrahedron Letters, 2597 (1965);
4. (d) G. Schuerer, A. Zeidler and A. Fischer, German Patent 1,210,242 (1966).
5. 3-Substituted 2,4-Quinazolinediones