反应详情

1.06 mmol of 4′-(octyloxy)-4-biphenyl-carboxylic acid, 1.06 mmol of EDC and 1.06 mmol DIPEA are added to a mixture of 0.53 mmol of 5-(3-amino-phenyl)-1,1-dioxo-1,2,5-thiadiazolidin-3-one and 0.11 mmol of HOAt in 6 ml of a DMF/toluene-mixture. The mixture obtained is stirred at rt for 18 hours, diluted with EtOAc and toluene and a precipitate is obtained and filtered off. 4′-Octyloxy-biphenyl-4-carboxylic acid [3-(1,1,4-trioxo-1,2,5-thiadiazolidin-2-yl)phenyl]-amide in solid form is obtained. The filtrate obtained is washed with HCl (1M) and brine, the organic layer is dried and solvent is evaporated. Further 4′-octyloxy-biphenyl-4-carboxylic acid [3-(1,1,4-trioxo-1,2,5-thiadiazolidin-2-yl)-phenyl]-amide is obtained.

1. customThe mixture obtained
2. customa precipitate is obtained
3. filtrationfiltered off