728883-71-4Relevant academic research and scientific papers
One-pot synthesis of some 2-amino-4H-chromene derivatives using triethanolamine as a novel reusable organocatalyst under solvent-free conditions and its application in electrosynthesis of silver nanoparticles
Maleki,Baghayeri,Sheikh,Babaee,Farhadi
, p. 1064 - 1072 (2017)
A wide variety of 2-amino-4H-chromene derivatives with diverse substituents on the 4H-chromene ring were efficiently prepared via one-pot three-component reaction of an aromatic aldehyde and malononitrile with 2-hydroxynaphthalene-1,4-dione, ethyl acetoac
Facile one-pot green synthesis of 2-amino-4H-benzo[g]chromenes in aqueous ethanol under ultrasound irradiation
Gracious, Shabalala Nhlanhla,Kerru, Nagaraju,Maddila, Suresh,van Zyl, Werner E.,Jonnalagadda, Sreekantha B.
supporting information, p. 1960 - 1971 (2020/06/01)
We report an efficient green one-pot approach for the synthesis of eighteen novel dihydro-4H-benzo[g]chromene derivatives under ultrasound irradiation conditions. The three-component condensation reaction proceeded through Knoevenagel-Michael reaction of
DBU: A highly efficient catalyst for one-pot synthesis of substituted 3, 4- dihydropyrano[3, 2-c]chromenes, dihydropyrano[4, 3-b]pyranes, 2-amino-4H- benzo[h]chromenes and 2-amino-4H benzo[g]chromenes in aqueous medium
Khurana, Jitender M.,Nand, Bhaskara,Saluja, Pooja
experimental part, p. 5637 - 5641 (2010/09/18)
We have reported DBU catalyzed one-pot synthesis of 3, 4-dihydropyrano[3, 2-c]chromenes, dihy- dropyrano[4, 3-b]pyranes, 2-amino-4H-benzo[h]chromenes and 2-amino-4H-benzo[g]chromenes from aldehydes, active methylene compounds malononitrile/ethyl cyanocace
A facile route to the synthesis of 1,4-pyranonaphthoquinone derivatives under microwave irradiation without catalyst
Wang, Xing-Han,Zhang, Xiao-Hong,Tu, Shu-Jiang,Shi, Feng,Zou, Xiang,Yan, Shu,Han, Zheng-Guo,Hao, Wen-Juan,Cao, Xu-Dong,Wu, Shan-Shan
experimental part, p. 832 - 836 (2009/12/09)
(Chemical Equation Presented) A series of 1,4-pyranonaphthoquinone derivatives were synthesized via the reaction of arylidenemalononitrile and 2-hydroxynaphthalene-1,4-dione in the mixed solvent of N,N-dimethylformamide and glacial acetic acid (HOAc) under microwave irradiation without catalyst. This protocol has the notable advantages of short reaction time, high yield, and convenient operation.
