Reaction equation
F[C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([S:10]([C:13]2[CH:18]=[C:17]([O:19][CH3:20])[CH:16]=[C:15]([CH3:21])[CH:14]=2)(=[O:12])=[O:11])[C:3]=1[C:4]#[N:5].[NH3:22]>C(O)C.C1COCC1>[NH2:22][C:2]1[CH:9]=[CH:8][CH:7]=[C:6]([S:10]([C:13]2[CH:18]=[C:17]([O:19][CH3:20])[CH:16]=[C:15]([CH3:21])[CH:14]=2)(=[O:12])=[O:11])[C:3]=1[C:4]#[N:5]Participants
Conditions
- Temperature
- 130 °C
Procedure
A solution of 0.3 g (0.00098 mol) of 2-fluoro-6-[(3-methyl-5-methoxyphenyl)sulfonyl]benzonitrile (Example 25) in 10 mL of absolute ethanol and ca. 2 mL of THF was saturated with ammonia. The resultant solution was sealed in a glass-lined Parr bomb and heated to 130° C. for 4 h. The solvent was removed in vacuo. 20 mL of 1 NaOH was added. This aqueous solution was extracted with 3×50 mL of EtOAc. The EtOAc solution was dried over MgSO4. After solvent removal, the crude product was recrystallized from absolute ethanol to give 0.1 g (34%) of 2-amino-6-[(3-methyl-5-methoxyphenyl)sulfonyl]benzonitrile: mp 166°-168° C.; NMR (Me2SO-d6, 200 MHz δ 2.4 (s, 3H), 3.87 (s, 3H), 6.7 (br s, 2H), 7.13 (apparent d, 1H), 7.2 (unresolved s, 1H), 7.3-7.5 (m, 2H), 7.57 (apparent t, 1H). Anal. Calc. for C15H14N2O3S: C, 59.59; H, 4.67;N, 9.27; S, 10.6. Found: C, 59.67;H, 4.71;N, 9.25; S, 10.51.
Workup
- customThe solvent was removed in vacuo
- addition20 mL of 1 NaOH was added
- extractionThis aqueous solution was extracted with 3×50 mL of EtOAc
- dry with materialThe EtOAc solution was dried over MgSO4
- customAfter solvent removal
- customthe crude product was recrystallized from absolute ethanol
Sources & evidence
- ORD record
- ord-b52dd58a1564476b8012385c8b071efd
- Source dataset
- uspto-grants-1998_03
- Patent number
- US05723452
Linked notes
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