Synthesis of di- or trisubstituted phosphonic and phosphonothioic di- or trihydrazides

Article abstract of DOI:10.1055/s-1993-26017

2,2' disubstituted phosphonothioic or phosphonic dihydrazides 3a-p or 3a'-g' and 2,2',2'' trisubstituted phosphonothioic or phosphonic trihydrazides 4a-e, 4i-l or 4a'-h' were prepared in high yields by reacting phosphonothioic or phosphonic di- or trihydr