Synthesis of bisflavone-type compounds. (III). Selective demethoxylation of 1,4-bis(2',4',6'-trimethoxyphenyl)-1,4-butanedione
Selective demethylation of the title compd. (I, R = Me) with BCl3 or AlCl3 was described. E.g., treating I (R = Me) with BCl3 in CH2Cl2 at 0 Deg gave 98% I (R = H). [on SciFinder (R)]
1989
25
1
157
8
CAN 112:197755
25-16
Benzene, Its Derivatives, and Condensed Benzenoid Compounds
Lanzhou Univ.,Lanzhou,Peop. Rep. China.
Journal
written in Chinese.
120341-52-8P; 126836-71-3P; 126836-72-4P; 126836-73-5P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. of); 7446-70-0 (Aluminum trichloride); 10294-34-5 (Boron trichloride) Role: RCT (Reactant), RACT (Reactant or reagent) (selective demethylation by, of bis(trimethoxyphenyl)butanonedione); 120341-51-7 Role: RCT (Reactant), RACT (Reactant or reagent) (selective demethylation of)
REVIEWED
OTHER