A Concise Synthesis of 2-Amino-1,2,3,4-tetrahydronaphthalene-6,7-diol (‘6,7-ADTN’) from Naphthalene-2,3-diol
作者:Süleyman Göksu、Cavit Kazaz、Yaşar Sütbeyaz、Hasan Seçen
DOI:10.1002/hlca.200390272
日期:2003.10
2-Amino-1,2,3,4-tetrahydronaphthalene-6,7-diol (2; 6,7-ADTN) was synthesized starting from naphthalene-2,3-diol in seven steps and with an overall yield of 44%. Methylation of naphthalene-2,3-diol with dimethyl sulfate, followed by FriedelCrafts acylation with AcCl, gave 2-acetyl-6,7-dimethoxynaphthalene. 2-Acetyl-6,7-dimethoxynaphthalene was converted to 6,7-dimethoxynaphthalene-2-carboxylic acid
从萘-2,3-二醇开始,经七个步骤合成了2-氨基-1,2,3,4-四氢萘-6,7-二醇(2 ; 6,7-ADTN),总收率为44% 。萘-2,3-二醇与硫酸二甲酯的甲基化,然后用AcCl进行Friedel Crafts酰化,得到2-乙酰基-6,7-二甲氧基萘。通过卤仿反应将2-乙酰基-6,7-二甲氧基萘转化为6,7-二甲氧基萘-2-羧酸。羧酸以4摩尔当量进行桦木还原。通过在液氨中的Na,得到1,2,3,4-四氢-6,7-二甲氧基萘-2-羧酸,通过Curtius反应从中获得2,然后进行氢解和去甲基化。