Haines; Waters, Journal of the Chemical Society, 1958, p. 3221
作者:Haines、Waters
DOI:——
日期:——
Central Stimulants. Chemistry and Structure-Activity Relationship of Aralkyl Hydrazines
作者:John H. Biel、Alexander E. Drukker、Thomas F. Mitchell、Edwin P. Sprengeler、Patrick A. Nuhfer、Alvin C. Conway、A. Horita
DOI:10.1021/ja01520a048
日期:1959.6
Regioselective Synthesis of Quinolin-8-ols and 1,2,3,4-Tetrahydroquinolin-8-ols by the Cyclization of 2-(3-Hydroxyphenyl)ethyl Ketone<i>O</i>-2,4-Dinitrophenyloximes
Cyclization of 2-(3-hydroxyphenyl)ethylketone O-2,4-dinitrophenyloximes proceeds on the oxime nitrogen atom by the treatment with NaH and then with 2,3-dichloro-5,6-dicyano-p-benzoquinone and acetic acid to yield quinolin-8-ols regioselectively. The reaction in the presence of Na[BH3(CN)] affords 1,2,3,4-tetrahydroquinolin-8-ols. The present cyclization proceeds via alkylideneaminyl radical intermediates
2-(3-羟基苯基)乙基酮 O-2,4-二硝基苯基肟的环化反应在肟氮原子上进行,先用 NaH 处理,然后用 2,3-二氯-5,6-二氰基-对苯醌和乙酸处理区域选择性地产生喹啉-8-醇。在 Na[BH3(CN)] 存在下反应得到 1,2,3,4-四氢喹啉-8-醇。本环化通过亚烷基亚胺基自由基中间体进行,该中间体由 3-羟基苯基和 2,4-二硝基苯基部分之间的单电子转移产生。