Methanesulfonyl chloride → HCID 14304994, compound

Participants

Reaction Steps

6 g of flavone-3-carboxylic acid was converted into the mixed anhydride with 5.5 g 4-dimethylaminopyridine and 2.2 ml methanesulfonyl chloride in 50 ml absolute dichloromethane under the conditions described in Example 1 (a), and the mixed anhydride was then reacted with 4.42 ml N-benzylpiperazine as described in Example 1 (b). The working up of the reaction mixture and the purification of the resulting crude title compound were carried out in the manner described in Example 1 (b). 9 g of 3-[(4-benzylpiperazin-1-yl)-carbonyl]flavone were obtained.

Provenance & Evidence