References and Notes
- Pissiotas , G. , Moser , H. and Brunner , H. G. 1991 . Chem. Abstr. , 115 : 71391g EP 420810
- Elbe , H. L. , Marhold , A. , Luerssen , K. , Santel , H. J. , Schmidt , R. R. and Krauskopf , B. 1991 . Chem. Abstr. , 114 : 207016c EP 403891
- Saito , K. , Hagiwara , K. , Hara , T. , Ishikawa , H. , Inaba , H. and Sato , J. 1988 . Chem. Abstr. , 109 : 37735p JP 63 39859
- Pissiotas , G. , Moser , H. and Brunner , H. G. 1989 . Chem. Abstr. , 109 : 133984f EP 305333
- Katritzky , A. R. and Kotali , A. 1990 . Tetrahedron Lett. , 31 : 6781
- Kotali , A. and Tsoungas , P. G. 1987 . Tetrahedron Lett. , 28 : 4321
- 4-Chloro-2-fluoro-5-hydroxyaniline (5) was prepared from 4-fluorophenol in 5 steps in 31% overall yield.
- For example, the reaction of 4a and 5 in acetic acid (refiux, 24 h) gave only 15% of 6a.