4-Chlorobenzenesulfonyl chloride → 4-chlorobenzene-1-sulfonohydrazide
Reaction equation
NC1C(C=[N:11][NH:12][S:13]([C:16]2[CH:21]=[CH:20][C:19]([Cl:22])=[CH:18][CH:17]=2)(=[O:15])=[O:14])=NC(Cl)=C(Cl)N=1.ClC1C=CC(S(Cl)(=O)=O)=CC=1.NN>>[Cl:22][C:19]1[CH:18]=[CH:17][C:16]([S:13]([NH:12][NH2:11])(=[O:14])=[O:15])=[CH:21][CH:20]=1Participants
4
Procedure
p-Chlorobenzenesulfonic acid 2-[(3-amino-5,6-dichloropyrazinyl)methylene]hydrazide by the reaction of p-chlorobenzenesulfonyl chloride with hydrazine to form p-chlorobenzenesulfonylhydrazine, followed by the reaction of the latter with 3-amino-5,6-dichloropyrazinaldehyde.
Sources & evidence
- ORD record
- ord-de4bcb242c4f4c488b433f69d6c95288
- Source dataset
- uspto-grants-1984_10
- Patent number
- US04479953
Reaction notes
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