Oxokohlenstoffe und verwandte Verbindungen;18. Mitteilung<sup>1</sup>. Umsetzung von Perchlorcyclobutenon mit Pyridinen: Synthese von 4<i>H</i>-4-Chinolizinonen im Eintopfverfahren
作者:Arthur H. Schmidt、Mario Dümmler
DOI:10.1055/s-1992-26281
日期:——
Oxocarbons and Related Compounds; Part 18.1 The Reaction of Perchlorocyclobutenone with Pyridines: A Novel Synthesis of 4H-4-Quinolizinones Heating of tetrachlorocyclobutenone (5) with the pyridines 6a-i followed by treatment with water affords 1,3-dichloro-2-hydroxy-4H-4-quinolizinones 7a, b, g-h and 1,3-dichloro-2-hydroxy-4-oxo-4H-quinolizinecarboxylates 7c-f. The reaction pathway has been secured by trapping 1,2,3-trichloro-8-(1,1-dimethylethyl)-4H-4-quinolizinone (11b) and by its successive conversion to 7b on heating with water.
氧碳化合物及相关化合物;第18.1部分:四氯环丁烯酮与吡啶的反应:一种新颖的4H-4-喹唑烯酮合成。将四氯环丁烯酮(5)与吡啶(6a-i)加热,再用水处理,可以得到1,3-二氯-2-羟基-4H-4-喹唑烯酮(7a, b, g-h)和1,3-二氯-2-羟基-4-氧-4H-喹唑烯酸酯(7c-f)。通过捕获1,2,3-三氯-8-(1,1-二甲基乙基)-4H-4-喹唑烯酮(11b),并在加热水的条件下将其连续转化为7b,确定了反应路径。