NITROSATIONS WITH HYDRAZINE DERIVATIVES . 14. SYNTHESIS OF N-4-ARENESULFINYLSEMICARBAZIDES AND N-5-ARENESULFINYL-N-1-AMINOBIURETES FROM ARENESULFINYLISOCYANATES AND N,N-DISUBSTITUTED HYDRAZINES
W. Hanefeld et J. Landwehr, NITROSATIONS WITH HYDRAZINE DERIVATIVES . 14. SYNTHESIS OF N-4-ARENESULFINYLSEMICARBAZIDES AND N-5-ARENESULFINYL-N-1-AMINOBIURETES FROM ARENESULFINYLISOCYANATES AND N,N-DISUBSTITUTED HYDRAZINES, Die Pharmazie, 50(5), 1995, pp. 344-351
Arenesulfinyl-isocyanates 5 prepared in situ from arenesulfinyl chlori
des 4 and silver cyanate react with N,N-disubstituted hydrazines to mi
xtures of N-4-arenesulfinylsemicarbazides 6 as main components and N-5
-arenesulfinyl-N-1-amino biuretes 7 as minor components. Nitrosation o
f 6 leads to arenesulfonyltriazenes 9.