The synthesis of chromenoquinolines via cyclization of different substituted anilines or naphthylamine with O-propargylated salicylaldehydes using Cul/La(OTf) 3 as an efficient catalyst in the reflux temperature of acetonitrile is reported.
A novel procedure for the synthesis of various derivatives of 6H-chromeno [4, 3-b] quinolines from intramolecular Heck reaction of 2-chloro-3-(phenoxymethyl) quinolines is described in this study. Intramolecular cyclization of N-alkylated indoles was efficiently investigated as well. The reaction is catalyzed by bis (triphenylphosphine) palladium (II) dichloride in acetonitrile at 80 °C.
在这项研究中描述了一种从2-氯-3-(苯氧甲基)喹啉的分子内Heck反应合成6 H-色酚[4,3- b ]喹啉的各种衍生物的新方法。还有效地研究了N-烷基化的吲哚的分子内环化。该反应由双(三苯基膦)二氯化钯(II)在乙腈中于80°C催化。