General method for the high yield preparation of 2-(4-X-phenylene)amine-1,4-naphthoquinones (X=ferrocenyl, OMe, Me, I, Cl, and NO2) from 2-methoxy-1,4-naphthoquinone and investigation of H+ and Mg2+ catalysts with DFT calculations
作者:Acácio I. Francisco、Maria D. Vargas、J. Walkimar de M. Carneiro、Maurício Lanznaster、José C. Torres、Celso A. Camara、Angelo C. Pinto
DOI:10.1016/j.molstruc.2008.03.028
日期:2008.11
2-methoxy-1,4-naphthoquinone, in boiling MeOH, using MgCl 2 and p -toluenesulfonic acid as catalysts is described. This methodology has been applied successfully to the synthesis of electron donor (4-OMe, 4-Me, 4-ferrocenyl) and electron withdrawing (4-I, 4-Cl, 4- and 3-NO 2 ) aniline derivatives. The effect of both H + and Mg 2+ as catalysts was investigated using DFT calculations carried out at the
摘要 一种在沸腾的甲醇中,使用 MgCl 2 和对甲苯磺酸从 2-甲氧基-1,4-萘醌中高产率制备 2-(4-X-亚苯基)胺-1,4-萘醌的快速简便方法描述了酸作为催化剂。该方法已成功应用于电子供体(4-OMe、4-Me、4-二茂铁)和吸电子(4-I、4-Cl、4-和3-NO 2 )苯胺衍生物的合成。使用在 B3LYP/6-31G(d) 水平进行的 DFT 计算研究了 H + 和 Mg 2+ 作为催化剂的影响。研究了新型 2-(4-ferrocenylphenylene)amine-1,4-naphthoquinone 3b 的电子性质,结果表明二茂铁基和甲氧基在 2-(4-甲氧基) 胺-1,4 中具有相似的电子供体性质-萘醌3a。