作者:Süleyman Göksu、Hasan Seçen
DOI:10.1016/j.tet.2005.04.069
日期:2005.7
2-Amino-5,6-dimethoxyindan hydrochloride was synthesized in seven steps and with an overall yield of 48%. Indan-2-ol was converted to 5,6-dibromo-indan-2-ol in three steps by acetylation, electrophilic bromination and deacetylation. Dimethoxylation of 5,6-dibromoindan-2-ol with NaOCH3 in the presence of CuI gave 5,6-dimethoxy-indan-2-ol, which was converted to 2-amino-5,6-dimethoxyindan hydrochloride
通过七个步骤合成了2-氨基-5,6-二甲氧基茚满盐酸盐,总收率为48%。通过乙酰化,亲电溴化和脱乙酰作用,在三个步骤中将茚满-2-醇转化为5,6-二溴-茚满-2-醇。在CuI存在下,用NaOCH 3对5,6-二溴茚满-2-醇进行二甲氧基化,得到5,6-二甲氧基茚满-2-醇,通过叠氮化将其转化为2-氨基-5,6-二甲氧基茚满盐酸盐,然后由Pd–C催化加氢。类似地,以五个步骤合成2-氨基-5-溴代茚满,总产率为50%。通过叠氮化,然后Pd–C催化的氢化作用,将茚满-2-醇转化为2-氨基茚满。2-氨基茚满与2.5当量Br 2的反应得到2-氨基-5,6-二溴茚满。