Reduction of indolo[2,3-b]quinoxalines
2005 (English)In: Tetrahedron, ISSN 0040-4020, E-ISSN 1464-5416, Vol. 61, no 18, 4495-4500 p.Article in journal (Refereed) Published
Reduction of indolo[2,3-b]quinoxalines with zinc in the presence of an anhydride gave N,N-diacyl trapped 6,11-dihydroindolo[2,3-b]quinoxalines in 43-92% yields. When the reduction with zinc was performed in TFA/TFAA, an unexpected ring opened product was isolated in 49% yield. The structure of this product could be identified as 1,2-dihydro-1-trifluoroacetyl-3-[(2-trifluoroacetylamino)phenyl]quinoxal ine.
Place, publisher, year, edition, pages
2005. Vol. 61, no 18, 4495-4500 p.
IdentifiersURN: urn:nbn:se:sh:diva-14382DOI: 10.1016/j.tet.2005.02.060ISI: 000228607400018ScopusID: 2-s2.0-17044402179OAI: oai:DiVA.org:sh-14382DiVA: diva2:469159