HADDADIN M. J.; BITAR H. E.; ISSIDORIDES C. H., HETEROCYCLES, 1979, 12, NO 3, 323-327
作者:HADDADIN M. J.、 BITAR H. E.、 ISSIDORIDES C. H.
DOI:——
日期:——
ELINA A. S.; MUSATOVA I. S.; PERESLENI E. M.; PADEJSKAYA E. N., XIMIYA GETEROTSIKL. SOEDIN. <KGSS-AQ>, 1976, HO 2, 278-283
作者:ELINA A. S.、 MUSATOVA I. S.、 PERESLENI E. M.、 PADEJSKAYA E. N.
DOI:——
日期:——
AHMED YUSUF; QURESHI M. IKRAM; HABIB M. SALEEM; FAROOQI M. AMIR, BULL. CHEM. SOC. JAP., 60,(1987) N 3, 1145-1148
作者:AHMED YUSUF、 QURESHI M. IKRAM、 HABIB M. SALEEM、 FAROOQI M. AMIR
DOI:——
日期:——
US6183934B1
申请人:——
公开号:US6183934B1
公开(公告)日:2001-02-06
Quinoxaline Derivatives. XII. The Reactions of Quinoxaline 1,4-Dioxides with Acetic Anhydride
作者:Yusuf Ahmed、M. Ikram Qureshi、M. Saleem Habib、M. Amir Farooqi
DOI:10.1246/bcsj.60.1145
日期:1987.3
reagent took place exclusively on N-oxide para to the electron-donating substituents, and none of the other expected isomeric compounds XVIIb–d were isolated. Whereas 6-chloroquinoxaline 1,4-dioxide (XIIIe) bearing an electron-attracting chloro substituent on the benzene ring gave exclusively the other isomers XVIIe, XVIIIe, and XXe. A mechanism for this novelrearrangement is proposed and discussed.