... IH. A New Route to 501 4,5-Dihydrooxazoles and 5,6-Dihydro-4H-1,3-oxazines Kunio Ito and Shingo Miyajima* Department of Applied Chemistry, Faculty of Engineering, Toyo University, Kujirai, Kawagoe/shi, Saitama 350 ... 6] FT Smith and RV Atigadda, J. Heterocyclic Chem, 28 ...