Three Questionable Cases in the Chemistry of Quinoxalines and Benzodiazepines in the Way of the Syntheses of Benzimidazoles
作者:Vakhid A. Mamedov、Anna M. Murtazina、Dil'bar I. Adgamova、Nataliya A. Zhukova、Tat'yana N. Beschastnova、Sergey V. Kharlamov、Il'dar Kh. Rizvanov、Shamil K. Latypov
DOI:10.1002/jhet.1788
日期:2014.11
N‐dimethylaminomethylene‐2‐oxo‐1,2‐dihydrofuro[2,3‐b]quinoxaline 10 in the first case, the formation of 3‐[2‐(benzimidazol‐2‐on‐1‐yl)vinyl]‐1H‐quinoxalin‐2‐one 12 in the second case, and the formation of 2,3‐bis‐(1H‐benzimidazol‐2‐yl)quinoxaline 17 in the third case and not the formation of 3‐(N,N‐dimethylaminocarbonyl)furo[2,3‐b]quinoxaline hydrochloride 6, the free base of 3‐(3,4‐dihydroquinoxalin‐2(1H)‐on‐3‐yl)‐1
的反应3-乙氧羰基-3,4-二氢喹喔啉-2(1 H ^) -酮5与Vilsmeier试剂,治疗3-(3,4-二氢喹喔啉-2(1 H ^) -酮-3-基) -1,2-二氢-1,5-苯并二氮杂-2-(1 H)-含10%氢氧化钠的盐酸盐7和3-苯并咪唑基喹喔啉-2(1 H)-含1,2-苯二胺二盐酸盐的3和对1,2-苯二胺的反应进行了重新研究,并对这些反应产物的结构进行了修改。前述反应已证明可形成1 N,N N二甲基氨基亚甲基2 oxo 1,2二氢呋喃[2,3b ]第一种情况下的喹喔啉10,第二种情况下形成3 [[2-(苯并咪唑-2-基-1-基)乙烯基] -1 H-喹喔啉-2-一个12,在第三种情况下,3-双(1 H-苯并咪唑-2-基)喹喔啉17而不形成3-(N,N-二甲基氨基羰基)呋喃[2,3- b ]喹喔啉盐酸盐6(游离碱) 3-(3,4-二氢喹喔啉-2(1 H)-3-基)-1,2-二氢-1,5-苯二氮杂-2-2(1