Many new cyclic esters of N-toulene-sulfonyl cu-aminophosphonic acids
were synthesized by the three-component reaction of p-toluenesulfonami
de, an aromatic aldehyde, and 2-chloro-1,3,2-zodioxaphosphole in anhyd
rous benzene. Different reaction conditions have been investigated and
the related reaction mechanisms have been suggested. (C) 1998 John Wi
ley & Sons, Inc. Heteroatom Chem 9:511-516, 1998.