Effects of substituent and catalyst on the intramolecular Povarov reaction—synthesis of chromenonaphthyridines
作者:Sourav Maiti、Suman Kalyan Panja、Koushik Sadhukhan、Jaydip Ghosh、Chandrakanta Bandyopadhyay
DOI:10.1016/j.tetlet.2011.11.130
日期:2012.2
2-(N-Alkenyl-N-aryl)aminochromone-3-carbaldehyde undergoes intramolecular Povarov reaction with aromatic amines in the presence of Ph3P·HClO4 to produce chromenonaphthyridine. The effects of substituent and catalyst have been studied. The substituent on the alkenyl part of aminochromone controls the mode of reaction as well as the stereochemistry of the product.
2-(N-烯基-N-芳基)氨基色酮-3-甲醛在Ph 3 P·HClO 4存在下与芳香胺进行分子内Povarov反应,生成壬基萘并吡啶。已经研究了取代基和催化剂的作用。氨基色酮的烯基部分上的取代基控制反应的方式以及产物的立体化学。