Process for 4-sulfonamidolphenyl hydrazines

Details Process for 4-sulfonamidolphenyl hydrazines Process for 4-sulfonamidolphenyl hydrazines

1997-11-26

2000-01-04

O'Sullivan, Peter

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C30340

Patent

active

060111771

ABSTRACT:
4-Sulfonamidophenyl hydrazines are prepared by reaction between the hydrazine, optionally substituted, and the corresponding 4-substituted benzenesulfonamides, where the 4-substitution is an appropriate leaving group, in the presence of water and the absence of dimethyl sulfoxide as a solvent. The result is a product of unusually high purity.

REFERENCES:
patent: 3476763 (1969-11-01), Monbaliu
patent: 3839325 (1974-10-01), Hoffstadt
patent: 5563165 (1996-10-01), Talley et al.

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