22086-33-5Relevant articles and documents
3,3-Dichloro-1,4-diphenylazetidin-2-one
Kabak, Mehmet,Elerman, Yalcin,Guener, Vildan,Yildirir, Suleyman,Durlu, Tahsin Nuri
, p. 1511 - 1512 (1999)
In the crystal structure of the title compound, C15H11Cl2NO, the Cl - C - Cl plane is nearly perpendicular to the four-membered β-lactam ring [89.0(2)°] and the C - C bond distances in this group are 1.571 (6) and 1.543 (7) A. The most out-of-plane atom from the best plane of the lactam ring is the carbonyl C atom [-0.029(5) A]. The dihedral angle between the best planes of the phenyl rings is 77.4(2)°.
Reaction of Imines with Trichloroacetic Esters or Anhydride Promoted by Iron Carbonyl or Microwave Irradiation. Preparation of 3,3-Dichloro-β-Lactams
Khajavi, Mohammad S.,Sefidkon, Fatemeh,Sadat Hosseini
, p. 724 - 725 (2007/10/03)
The synthesis of 3,3-dichloroazetidin-2-ones by the reaction of imines and methyl or trimethylsilyl trichloroacetate promoted by diiron nonacarbonyl or by microwave irradiation of imines and trichloroacetic anhydride is described.
TRIPHENYLPHOSPHINE DIBROMIDE AND DIMETHYLSULFIDE DIBROMIDE AS VERSATILE REAGENTS FOR BETA-LACTAM SYNTHESIS
Cossio, Fernando P.,Ganboa, Inaki,Palomo, Claudio
, p. 3041 - 3044 (2007/10/02)
Triphenylphosphine dibromide and dimethylsulfide dibromide are efficient reagents for the direct synthesis of beta-lactams from carboxylic acids and imines avoiding the use of acid halides as starting materials.Synthesis of 4-imino-beta-lactams are also briefly described.A potential synthesis of N-unsubstituted beta-lactams is made.
