3-(Phenylsulfonyl)propanoic acid → Diisopropylcarbodiimide

Participants

Reaction Steps

By carrying out the operation according to the procedure of Example 31, starting with 58.5 mg of 3-phenylsulfonylpropionic acid, 26.4 mg of hydroxybenzotriazole in solution in 0.5 cm3 of dimethylformamide, 0.0302 cm3 of diisopropylcarbodiimide, a solution of 30 mg of 1-[bis(4-chlorophenyl)methyl]azetidin-3-ylamine in 0.5 cm3 of anhydrous dichloromethane, and 3 cm3 of anhydrous dichloromethane, N-{1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}-4-methanesulfonylbenzamide is obtained in the form of a lacquer [1H NMR spectrum (300 MHz, CDCl3, δ in ppm): 2.71 (t, J=7.5 Hz: 2H) 2.86 (mt: 2H); from 3.40 to 3.55 (mt: 4H); 4.26 (s: 1H); 4.45 (mt: 1H); 6.22 (broad d, J=7.5 Hz: 1H); from 7.20 to 7.35 (mt: 8H); 7.59 (broad t, J=7.5 Hz: 2H); 7.69 (tt, J=7.5 and 1.5 Hz: 1H); 7.93 (broad d, J=7.5 Hz: 2H)].

Provenance & Evidence