A new intramolecular recyclization in water-base cleavage reaction of 2,2-dialkyl-4-hydroxymethylbenz[<i>f</i>]iso indolinium bromides and chlorides
作者:Emma O. Chukhajian、Hasmik R. Gevorkyan、Eliza O. Chukhajian、Knarik G. Shahkhatuni、Henrik A. Panosyan、Rafael A. Tamazyan
DOI:10.1002/jhet.5570400614
日期:2003.11
The water-base cleavage reaction of 2,2-dialkyl-4-hydroxymethylbenz[f]isoindolinium bromides and chlorides (2b-g) and (4a-g) was investigated. It was established that the above-mentioned salts in water-base cleavage reaction undergo intramolecular recyclization. As a result 1,3-dihydro-4-dialkylaminomethyl-naphto[1,2-c]furans (5a-g) are obtained in 62-72% yields. The same products in 65-70% yields
研究了2,2-二烷基-4-羟基甲基苯并[ f ]异吲哚鎓溴化物和氯化物(2b-g)和(4a-g)的水基裂解反应。已经确定,上述在水基裂解反应中的盐经历分子内再循环。结果,以62-72%的产率获得了1,3-二氢-4-二烷基氨基甲基-萘[1,2- c ]呋喃(5a-g)。还可通过二烷基-4-羟基丁炔-2-基-(3-苯基炔丙基)铵盐(1b-g)和(3a-g)的逐步环化裂解反应获得65-70%产率的相同产物。所得胺5a-g的结构 通过X射线衍射,核磁共振和红外光谱法确定和批准。