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)]


Published in:
Lanzhou Daxue Xuebao, Ziran Kexueban, 25, 1, 157-8
Year:
1989
Keywords:
Note:
CAN 112:197755
25-16
Benzene, Its Derivatives, and Condensed Benzenoid Compounds
Lanzhou Univ.,Lanzhou,Peop. Rep. China.
Journal
0455-2059
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)
Laboratories:




 Record created 2010-11-25, last modified 2018-03-17


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