摘要:
The reaction of 1H-indol-2,3-diones with 1,6-dibromohexane has resulted in the formation of new 1H-indol-2,3-diones-1,1'-(1,6-hexanediyl) bis in quantitative yields. These compounds have been used for the synthesis of novel [3'-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl) spiro[3H-indol-3,2'-thiazolidine]-2,4'-dione]1,1'-(1,6-hexanediyl) bis via bis Schiff's bases, [3-(2,3-dimethyl-5-oxo-1-phenyl-3-pyrazolin-4-yl) imino-1H-indol-2-one]-1,1'-(1,6-hexanediyl)bis.