N-Carbethoxyphthalimide → HCID 70530811, compound

Participants

Reaction Steps

A solution of trans 3-aminomethyl-4-tritylthio-2-azetidinone (13.9 g, 37.2 mmol) and N-carbethoxyphthalimide (8.3 g, 37.9 mmol) in benzene (200 ml) was heated under reflux for 15 h. The solvent was evaporated in vacuo and the residue crystallized from ether to give (17.4 g (93%) of the title compound; mp 172°-3° C.; Anal. calcd for C31H24N2O3S: C 73.78, H 4.79, N 5.55, found: C 73.92, H 4.87, N 5.49; ir (CHCl3) νmax : 1770 and 1715 cm-1 ; 1Hmr (CDCl3) δ: 7.8 (4H, m), 7.3 (15H, m), 4.45 (1H, d, J=2 Hz), 3.3-4.1 (3H, m) and 3.3-4.6 ppm (1H, m).

Provenance & Evidence