Synthesis of 4-Amino-, 4-Hydroxy-, and 4-Nitro-1,3,4,5-tetrahydrobenz[cd]indols and Its Bromination
作者:Masanori Somei、Kyoko Nakagawa、Naokatsu Aoki、Harunobu Mukaiyama
DOI:10.3987/com-13-s(s)74
日期:——
Simple synthetic method for 4-nitro-1,3,4,5-tetrahydrobenz[cd]indole (6) is established from indole-3-carboxaldehyde (7). With 6 in hand, various derivatives of 4-amino-, 4-hydroxy- and 4-amino-4-hydroxymethyl-1,3,4,5-tetrahydrobenz[cd]indoles become readily available. Bromination of 6 afforded useful building blocks for further manipulation. Successful optical resolution of 6 by chiral column chromatography is also reported.