HCID 14439119, compound → HCID 19902733, compound

HRID 1087981Notes

Reaction equation

HRID 1087981 reaction equation
OCCS(C1C([N+]([O-])=O)=C(C=CC=1)C(O)=O)(=O)=O.[OH:19][CH2:20][CH2:21][S:22]([C:25]1[C:33]([N+:34]([O-])=O)=[CH:32][CH:31]=[CH:30][C:26]=1[C:27]([OH:29])=[O:28])(=[O:24])=[O:23]>>[OH:19][CH2:20][CH2:21][S:22]([C:25]1[C:33]([NH2:34])=[CH:32][CH:31]=[CH:30][C:26]=1[C:27]([OH:29])=[O:28])(=[O:24])=[O:23]

Participants

3

Reactant 2

HCID 14439119HCID 14439119, compoundHCID 14439120HCID 14439120, compound

Product 1

HCID 19902733HCID 19902733, compound

Procedure

The procedure of previous Example 15 is repeated, except that the 3-hydroxyethylsulfonyl-2-nitrobenzoic acid is replaced by 2-hydroxyethylsulfonyl-3-nitrobenzoic acid and, after the clarifying filtration to remove iron sludge, a pH of 6.5 to 7.0 is established to give 64 parts of 2-hydroxyethylsulfonyl-3-aminobenzoic acid of the formula ##STR16## of melting point 75° to 77° C. and a purity (by diazotization) of 99.1%. Elemental analysis confirms the above structure.

Workup

  1. filtrationafter the clarifying filtration
  2. customto remove iron sludge

Sources & evidence

ORD record
ord-928ad6eefbc44668a75692491cc00ee5
Source dataset
uspto-grants-1990_10
Patent number
US04960929

Reaction notes

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