A Simple and Effective Procedure for theN-Permethylation of Amino-Substituted Naphthalenes
作者:Vladimir I. Sorokin、Valery A. Ozeryanskii、Alexander F. Pozharskii
DOI:10.1002/ejoc.200390085
日期:2003.2
ohols) with good to excellent yields. Steric hindrance does not prevent the reaction. Some amines with electron-withdrawing groups, especially at nonconjugated positions, are also alkylated. The procedure allows the combination of a reduction (catalytic or by tin dichloride in acidic media) and a methylation in a one-pot process. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
多种氨基取代的萘可以通过 Me2SO4/Na2CO3/H2O(醇)系统进行 N-全甲基化,收率非常好。空间位阻不会阻止反应。一些带有吸电子基团的胺,特别是在非共轭位置,也被烷基化。该程序允许在一锅法中将还原(催化或通过酸性介质中的二氯化锡)和甲基化相结合。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)