The NaOMe, AlCl3, AlCl3/ HCl, and fused NaOAc/ H3BO3 reagents were separately added to the methanolic solution of the investigated material and UV measurements were then recorded in (table 4) to determine the position of hydroxyl groups.
The NaOMe, AlCl3,AlCl3/ HCl, and fused NaOAc/ H3BO3 reagents wereseparately added to the methanolic solution of the investigatedmaterial and UV measurements were then recorded in (table 4)to determine the position of hydroxyl groups.