[C:1]1(=[O:15])[N:5]([CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][C:11](O)=[O:12])[C:4](=[O:14])[CH:3]=[CH:2]1.S(Cl)([Cl:18])=O>>[C:1]1(=[O:15])[N:5]([CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][C:11]([Cl:18])=[O:12])[C:4](=[O:14])[CH:3]=[CH:2]1The 6-maleimidocaproic acid is reacted with excess thionyl chloride at 50° C. for three hours, and then the excess thionyl chloride is distilled off to leave 6-maleimidocaproic chloride.
Wird geladen…