111861-49-5Relevant articles and documents
A simple green protocol for the synthesis of ethyl 3-amino-1-aryl-1H-benzo[f] chromene-2-carboxylates in aqueous media
Qian, Siran,Li, Mingjie,Liu, Jiaming,Wang, Cunde
, p. 487 - 490 (2017)
An eco-friendly and efficient straightforward method has been developed for the synthesis of ethyl 3-amino-1-aryl-1H-benzo[f]chromene-2-carboxylate derivatives via 1,4-diazabicyclo[2.2.2]octane (DABCO)-catalysed cyclisation of β-naphthol and 3-aryl-2-cyanoacrylates using water as a green solvent. All products precipitated from the reaction mixture and were isolated by simple filtration. No further workup nor purification was necessary. The structure of ethyl 3-amino-1-aryl-1H-benzo[f]chromene-2-carboxylate was further confirmed by X-ray single crystal analysis.
CYCLIZATION OF NITRILES. XXIII. ADDITION OF ACTIVE PHENOLS TO ELECTRON-DEFICIENT ETHYLENES, ACCOMPANIED BY CYCLIZAION TO 2-AMINO-4H-BENZOPYRANS. CRYSTAL STRUCTURE OF 2-AMINO-4-(2-FLUOROPHENYL)-3-ETHOXYCARBONYL-4H-NAPHTHOPYRAN
Klokol, G.V.,Sharanina, L.G.,Nesterov, V.N.,Shklover, V.E.,Sharanin, Yu.A.,Struchkov, Yu.T.
, p. 369 - 377 (2007/10/02)
Active phenols and also 2-naphthol react with arylidene derivatives of malononitrile and cyanoacetic ester with the formation of the corresponding substituted 2-amino-4H-benzo- and 2-amino-4H-naphthopyrans.By X-ray crystallographic investigation
