Heating the title compounds 1 at reflux in acetic anhydride yields quinoxalines 3 and 4 via a presumed aryliminoiminyl radical 5, resulting from homolytic cleavage of the N-O bond in the intermediate ester 2. The observed regioselectivity of the reaction is also rationalized by implicating such a radical. (C) 2000 Elsevier Science Ltd. All rights reserved.
Meldola; Eyre, Journal of the Chemical Society, 1902, vol. 81, p. 993
作者:Meldola、Eyre
DOI:——
日期:——
578. Organic complex-forming agents for metals. Part II. Preparation of 5-hydroxy- and 5 : 8-dihydroxy-quinoxalines and related compounds
作者:E. S. Lane、C. Williams
DOI:10.1039/jr9560002983
日期:——
NASIELSKI, J.;HEILPORN, S.;NASIELSKI-HINKENS, R.;GEERTS-EVRARD, F., TETRAHEDRON, 43,(1987) N 19, 4329-4338
作者:NASIELSKI, J.、HEILPORN, S.、NASIELSKI-HINKENS, R.、GEERTS-EVRARD, F.