93176-01-3Relevant articles and documents
Hydroxyl directed: C -arylation: Synthesis of 3-hydroxyflavones and 2-phenyl-3-hydroxy pyran-4-ones under transition-metal free conditions
Paul, Sayantan,Bhattacharya, Asish K.
, p. 444 - 451 (2018/02/06)
An efficient, transition-metal free and direct C-arylation of 3-hydroxychromone moieties in the presence of a base, air as an oxidant and arylhydrazines as arylating agents to furnish highly biologically active flavonols or 3-hydroxyflavones has been developed. We have further extended our methodology for the C-arylation of the 5-hydroxy pyran-4-one moiety. The role of the free hydroxyl group towards C-arylation has been delineated.
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
REACTION OF CHROMOUS CHLORIDE WITH 3-NITROFLAVENES. A NOVEL SYNTHESIS OF FLAVONOLS
Rao, T. Sudhakara,Mathur, H. H.,Trivedi, G. K.
, p. 5561 - 5562 (2007/10/02)
Reaction of Chromium(II) chloride with 3-nitroflavene yields flavonol.