作者:Ekaterina Shinkevich、Jurgen Deblander、Sandra Matthijs、Jan Jacobs、Norbert De Kimpe、Kourosch Abbaspour Tehrani
DOI:10.1039/c0ob00391c
日期:——
1,2-Disubstituted 1,2,3,4-tetrahydrobenz[g]isoquinoline-5,10-diones are prepared for the first time through an activated Pictet–Spengler reaction of the corresponding imines of 2-(1,4-dimethoxynaphth-2-yl)ethylamine in the presence of an acyl chloride and AlCl3 followed by an oxidation with silver(II) oxide in nitric acid . Depending on the reaction conditions the N-trichloroacetyl protecting group could be cleaved off, converted to an N-methoxycarbonyl group or transformed to an N-(2-oxoacetamide) moiety. The synthesized 1,2-disubstituted 1,2,3,4-tetrahydrobenz[g]isoquinoline-5,10-diones constitute a new class of quinones, which has not been reported yet.
首次通过活化的Pictet–Spengler反应合成了1,2-取代的1,2,3,4-四氢苯[g]异喹啉-5,10-二酮,该反应使用了2-(1,4-二甲氧基萘-2-基)乙胺的相应亚胺,在酰氯和AlCl3的存在下进行,随后在硝酸中用银(II)氧化物进行氧化。根据反应条件,N-三氯乙酰保护基团可以被切除,转化为N-甲氧基羧酸基团,或转变为N-(2-氧基乙酰酰胺)结构。合成的1,2-取代的1,2,3,4-四氢苯[g]异喹啉-5,10-二酮构成了一类新的醌,尚未有文献报道。