Microwave-assisted synthesis of 3-aminoarylquinolines from 2-nitrobenzaldehyde and indole via SnCl2-mediated reduction and facile indole ring opening
作者:Mugada Sugunakara Rao、Subhankar Sarkar、Sahid Hussain
DOI:10.1016/j.tetlet.2019.03.047
日期:2019.5
A simple and efficient one-pot two-step synthesis of substituted 3-aminoarylquinolines has been achieved from 2-nitrobenzaldehyde and indoles under microwave irradiation. Firstly 2-nitrobenzaldehydes is reduced to 2-aminobenzaldehyde in situ by commonly used chemo selective reductant SnCl2 followed by condensation of indole. The acidic nature of the resultant reaction mixture due to SnCl2 helps in
在微波辐射下,由2-硝基苯甲醛和吲哚实现了简单有效的一锅两步合成取代的3-氨基芳基喹啉。首先,通过常用的化学选择性还原剂SnCl 2将2-硝基苯甲醛原位还原为2-氨基苯甲醛,然后缩合吲哚。由于SnCl 2,所得反应混合物的酸性性质有助于吲哚的缩合和容易的开环,从而导致以良好至中等的产率形成3-氨基芳基喹啉衍生物。