105849-85-2Relevant articles and documents
One pot, three component synthesis of spiroindenoquinoxaline pyrrolidine fused nitrochromene derivatives following 1,3-dipolar cycloaddition
Nayak, Sabita,Pattanaik, Priyabrata,Mohapatra, Seetaram,Mishra, Deepak Ranjan,Panda, Pravati,Raiguru, Bishnuprasad,Mishra, Nilima Priyadarshini,Jena, Subhrakant,Biswal, Himansu Sekhar
, p. 1823 - 1835 (2019)
An expedient one-pot sequential three-component synthesis of a series of diverse spiroindenoquinoxaline pyrrolidine fused nitrochromene derivatives following 1,3-dipolar cycloaddition of azomethine ylides generated in situ by the condensation of indenoqui
Bifunctional acid-base ionic liquid for the one-pot synthesis of fine chemicals: Thioethers, 2H-chromenes and 2H-quinoline derivatives
Climent, Maria J.,Iborra, Sara,Sabater, Maria J.,Vidal, Juan D.
, p. 27 - 38 (2014/06/10)
A bifunctional organocatalyst with ionic liquid properties and with an optimized distance between the acid and basic sites efficiently activates electron deficient olefins for 1,4 conjugated addition, which can be incorporated in different one-pot transformations for the preparation of cyclic and acyclic compounds of biological and synthetic interest. More specifically, the catalyst can be successfully applied for different carbon-carbon (CC) and carbon-heteroatom (C-N, C-O, C-S) bond forming reactions integrated in a cascade sequence. The activity of the organocatalyst has been compared with that of structurally related monofunctional and bifunctional catalysts. The most attractive features of this procedure are the high atom economy and the use of inexpensive starting materials as well as the use of an environmentally friendly catalyst that can be easily recovered due to its ionic liquid properties.
A NOVEL SYNTHESIS OF 6-METHOXY AND 7-METHOXY FLAVONOLS
Rao, Takkellapati Sudhakar,Deshpande, Shubhada,Mathur, Hari Har,Irivedi, Girish Kumar
, p. 1943 - 1946 (2007/10/02)
Condensation of 4-methoxy- (1) or 5-methoxy- (2) salicylaldehyde with ω-nitrostyrene (3-6) in the presence of triethylamine yields 7-methoxy or 6-methoxy-3-nitro-2H-flavene (7-13), which on treatment with alkaline hydrogen peroxide yields the correspondin