Thiazine derivatives R 0610 Synthesis of 2-Amino-4H-3,1-benzoxazines (IV) and 2-Amino-4H-3,1-benzothiazines (VII) by the Rearrangement of o-Cyclopropylphenylureas (III) and o-Cyclopropylphenylthioureas (VI). -(FEDOTOV*, A. N.; TROFIMOVA, E. V.; ROMANOV, V. A.; MOCHALOV, S. S.; SHABAROV, Y. S.; ZEFIROV, N. S.; Chem. Heterocycl. Compd. (N. Y.) 44 (2008) 1, 96-105; Lomonosov Moscow State Univ., Moscow 119992, Russia; Eng.) -H. Toeppel 21-167