332056-10-7Relevant articles and documents
Bipyridinium chloride supported rice husk silica: An efficient nanocomposite for the one-pot preparation of spirooxindole pyran and 2-amino-4h-chromene derivatives
KIASAT, Ali Reza,HAMID, Sheida,SAGHANEZHAD, Seyyed Jafar
, p. 927 - 934 (2021/02/05)
In this paper, rice-husk-silica supported n-propyl bipyridinium chloride (RHPrBPCl) has been prepared as a heterogeneous catalyst. RHPrBPCl has been successfully applied in the one-pot preparation of spirooxindole pyran and 2-amino- 4H-chromene derivative
One-pot Synthesis of 2-Amino-4H-Chromenes using Chicken Eggshell Waste as Green Catalyst under Solvent-Free Conditions
Gadhave, Anil,Uphade, Bhagwat
, p. 387 - 394 (2021/01/25)
Chicken eggshell waste has been employed as green and efficient catalyst for the preparation of 2-amino-4H-chromenes. The aromatic aldehydes were condensed with malononitrile and 1-naphthol or 2-naphthol under solvent-free condition in the presence of chi
Triethanolamine-catalyzed expeditious and greener synthesis of 2-amino-4H-chromenes
Patel, Anilkumar S.,Tala, Satishkumar D.,Nariya, Pankajkumar B.,Ladva, Kartik D.,Kapuriya, Naval P.
, p. 247 - 252 (2018/10/31)
Triethanolamine (TEOA), an inexpensive and eco-friendly base, was used to efficiently catalyze the three-component condensation reaction of heterocyclic/aromatic aldehyde, (α/β)-naphthol, and malononitrile in water to give the corresponding substituted 2-