. . . . "pto group; each of R5 and R6 group is H or CH3 or C2H5 or OH or OCH3 or OC2H5 or NO2 or halogen or NH2; X is halogen or OH or SO3H or COOH or OCnH2nC6H5 or OCnH2n+1 or aryl carboxy group or alkyl carboxy group, x is an integer between 1 and 2n+1 and n & p are integers greater than or equal to 1 and 2, respectively, and C, H, N, O and S are chemical elements, using the above supported solid catalys" . . . . .