作者:Robert Engqvist、Birgitta Stensland、Jan Bergman
DOI:10.1016/j.tet.2005.02.060
日期:2005.5
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]quinoxaline.
吲哚并[2,3-的减少b ]喹喔啉与在酸酐的存在下,得到锌Ñ,N-二酰基被困-6,11-二氢吲哚并[2,3- b ]喹喔啉在43-92%的产率。当在TFA / TFAA中用锌还原时,分离出意外的开环产物,产率为49%。该产物的结构可以鉴定为1,2-二氢-1-三氟乙酰基-3-[(2-三氟乙酰氨基)苯基]喹喔啉。