Reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][C:10]=1[CH3:11])[C:5]([OH:7])=[O:6].Cl.[N:13]([O-])=O.[Na+].C([O-])(=O)C.[Na+].[CH3:22][C:23]([SH:26])([CH3:25])[CH3:24]>O>[C:23]([S:26]/[N:13]=[N:1]/[C:2]1[CH:3]=[C:4]([CH:8]=[CH:9][C:10]=1[CH3:11])[C:5]([OH:7])=[O:6])([CH3:25])([CH3:24])[CH3:22]Participants
7
Reactant 5
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
To a mixture of 3-amino-4-methyl benzoic acid (5.0 g) in water (50 mL) was added concentrated hydrochloric acid (15 mL). The mixture was chilled to 0° C. in an ice/acetone bath. Sodium nitrite (2.28 g) was dissolved in water (10 mL) and slowly added to the mixture at 0° C. The pH was adjusted to 6 with saturated sodium acetate and 2-methyl-2-propanethiol (1.8 mL) was added. The mixture was stirred for 1 h and the resulting solids were collected by filtration, washed with water and dried under reduced pressure to give 5.7 g of the title compound: 1H NMR (CDCl3) δ 1.61, 2.20, 7.38, 7.55, 9.67.
Workup
- additionslowly added to the mixture at 0° C
- additionwas added
- filtrationthe resulting solids were collected by filtration
- washwashed with water
- customdried under reduced pressure
Sources & evidence
- ORD record
- ord-d460acee005d487d96d6209089279d3e
- Source dataset
- uspto-grants-2010_06
- Patent number
- US07727997B2
Linked notes
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