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- Title
Synthesis of 2-amino-4H-3,1-benzoxazines and 2-amino-4H-3,1-benzothiazines by the rearrangement of o-cyclopropylphenylureas and o-cyclopropylphenylthioureas.
- Authors
Fedotov, A. N.; Trofimova, E. V.; Romanov, V. A.; Mochalov, S. S.; Shabarov, Yu. S.; Zefirov, N. S.
- Abstract
Syntheses are reported for 2-cyclopropylphenylureas and 2-cyclopropylphenylthioureas and the behavior of these compounds was studied under conditions for the acid-catalyzed opening of the cyclopropyl ring. Upon the action of concentrated sulfuric acid or trifluoroacetic acid, these ureas and thioureas can undergo rearrangement to the corresponding 3,1-benzoxazines and 3,1-benzothiazines.
- Subjects
ORGANIC synthesis; PHENYL compounds; TAUTOMERISM; MOLECULAR structure; THIOUREA; UREA
- Publication
Chemistry of Heterocyclic Compounds, 2008, Vol 44, Issue 1, p96
- ISSN
0009-3122
- Publication type
Article
- DOI
10.1007/s10593-008-0006-8