93733-50-7Relevant articles and documents
Use of Hypervalent Iodine in the Synthesis of Isomeric Dihydrooxazoles
Carlucci, Claudia,Tota, Arianna,Colella, Marco,Ronamazzi, Giuseppe,Clarkson, Guy J.,Luisi, Renzo,Degennaro, Leonardo
, p. 428 - 436 (2018/06/11)
[Figure not available: see fulltext.] A convenient synthesis of 2- and/or 3-oxazolines has been developed depending on the structure and stereochemistry of the starting amino alcohol. PhI(OAc)2 acted as oxidant on the intermediate imine, as sup
Synthesis of β-lactams from acetic acids and imines induced by phenyl dichlorophosphate reagent
Arrieta,Cossio,Palomo
, p. 1703 - 1712 (2007/10/02)
The development of a practical method for the preparation of vinylamino-β-lactams from Dane salts and Schiff bases is described. Among the reagents known to produce β-lactams from imines and acetic acids, only phenyl dichlorophosphate and 1-methyl-2-chloropyridinium iodide are suitable for the synthesis of vinylamino-β-lactams. Reaction of acetic acids with ethanolimine derivatives promoted by phenyl dichlorophosphate affords oxazolidines instead of β-lactams. Protection of the hydroxyl group as the trimethylsilyl ether in the starting Schiff bases provides a convenient route to the corresponding β-lactams instead of oxazolidines. Some observations on the scope of the method are made.