1150-40-9Relevant academic research and scientific papers
A mild one-pot procedure for the polynitration of activated arenes. Convenient preparation of dinitro- and trinitrodialkoxybenzenes
Nose,Suzuki
, p. 1539 - 1542 (2007/10/03)
When first treated with an excess of nitrogen dioxide alone and then in the presence of ozone at low temperature, dialkoxybenzenes are smoothly and stepwise polynitrated in a one-pot manner to afford the corresponding dinitro or trinitro derivatives in good yield.
DIMETHOXY AROMATIC COMPOUNDS. V / NITRATION AND NITRO DEALKYLYTION REACTIONS OF 1,1-BIS(DIMETHOXYPHENYL)-2-METHYLPROPANES
Natoli, Maria C.,Ceraulo, Leopoldo,Lamartina, Liliana
, p. 145 - 152 (2007/10/02)
The nitration of the title compounds has been effected with different nitrating agents: HNO3 (either 65 percent or 99 percent in AcOH) and Cu(NO3)2 in Ac2O.It has been established that only the compounds having a high electronic density at the 1 position (2,4-dimethoxy derivatives) undergo considerable dealkylation processes and that either H3O(+) or NO2(+) can act as dealkylating agents.
An Unusual O-Methylation in the Allan-Robinson Synthesis of Purpurascenin, a 3,5,6,7,8,2',4',5'-Octamethoxyflavone
Patwardhan, Sarita A.,Gupta, Amrit S.
, p. 3786 - 3795 (2007/10/02)
In the Allan-Robinson synthesis of 3,5,6,7,8,2',4',5'-octamethoxyflavone (Purpurascenin, I), from 2,4,6-trihydroxy-3,5,ω-trimethoxyacetophenone (IV) and asarylic anhydride, the expected intermediate, 5,7-dihydroxy-3,6,8,2',4',5'-hexamethoxyflavone (III) unusually gets further methylated to give 5-hydroxy-3,6,7,8,2',4',5'-heptamethoxyflavone (II) during the course of reaction.The possible mechanism of methylation is discussed.
Synthesis of Araneol and Araneosol, the Flavonoids of Anaphalis araneosa DC
Dutta, Pradeep K.,Bagchi, Debasis,Pakrashi, Satyesh C.
, p. 1037 - 1038 (2007/10/02)
Araneol (5,7-dihydroxy-3,6,8-trimethoxyflavone, I) and araneosol (5,7-dihydroxy-3,6,8,4'-tetramethoxyflavone, II) have been synthesised by Hoesch condensation of 1,3,5-trihydroxy-2,4-dimethoxybenzene (III) with methoxyacetonitrile, followed by Allan-Robin
