1'-(3,4-Dichlorobenzyl)-7'-trifluoromethyl-spiro[imidazolidine-4,3'-indoline]-2,2',5-trione 、 、
1H-Indole-2,3-dione, 1-[(3,4-dichlorophenyl)methyl]-7-(trifluoromethyl)- 以obtained as a syrup of satisfactory purity by NMR, by reaction of 3,4-dichlorobenzyl chloride with 7-trifluoromethylindoline-2,3-dione in an analogous manner to that的产率得到3,4-二氯氯苄