Hydrochloric Acid → HCID 9931012, compound

HRID 849242Notes

Reaction equation

HRID 849242 reaction equation
[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([CH:12]([NH2:18])[CH2:13][S:14]([CH3:17])(=[O:16])=[O:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11])[CH3:2].C(=O)([O-])O.[Na+].C(OC(N1[C:33](=[O:34])[C:32]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:31]2[C:30]1=[O:39])=O)C.Cl>C(#N)C.O>[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([CH:12]([N:18]2[C:33](=[O:34])[C:32]3[C:31](=[CH:38][CH:37]=[CH:36][CH:35]=3)[C:30]2=[O:39])[CH2:13][S:14]([CH3:17])(=[O:16])=[O:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11])[CH3:2]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 31187N-CarbethoxyphthalimideHCID 516892Sodium BicarbonateHCID 112887921-(3-Ethoxy-4-methoxy-phenyl)-2-methanesulfonyl-ethylamine

Product 1

HCID 9931012HCID 9931012, compoundYield 70%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 6342AcetonitrileSolvent

Procedure

A mixture of 1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethylamine (200 mg, 0.73 mmol) and sodium hydrogen carbonate (80 mg, 0.95 mmol) in acetonitrile and water(2 mL each) was stirred under nitrogen at room temperature for 2 minutes. To the resulting solution was added N-ethoxycarbonylphthalimide (170 mg, 0.78 mmol). After 17 hours, the resulting solution was stirred with hydrochloric acid (2 mL, 4 N), and water (30 mL) at room temperature for 30 minutes. The resulting suspension was filtered and the solid was washed with water (2×25 mL), and then dried in a vacuum oven overnight (60° C., <1 torr) to yield 2-[1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]isoindoline-1,3dione as a solid (206 mg, 70% yield): mp, 151.0-152.0° C.; 1H NMR (CDCl3); δ 1.46 (t, J=6.9 Hz, 3H, CH3), 2.84 (s, 3H, CH3), 3.78 (dd, J=4.8, 14.4 Hz, I H, CHH), 3.84 (s, 3H, CH3), 4.10 (q, J=7 Hz, 2H, CH2), 4.54 (dd, J=10.1, 14.4 Hz, 1H, CHH), 5.90 (dd, J=4.8, 1 0.1 Hz, 1H, NCH), 6.83 (d, J=8.5 Hz, 1H, Ar), 7.11-7.15 (m, 2H, Ar), 7.67-7.73 (m, 2H, Ar), 7.80-7.84 (m, 2H, Ar); 13C NMR (CDCl3) δ 14.63, 41.49, 48.84, 54.82, 55.89, 64.45, 111.43, 112.50, 120.43, 123.51, 129.56, 131.58, 134.17, 148.57, 149.63, 167.80; Anal Calcd for C20H21NO6S: C, 59.54; H, 5.25; N, 3.47. Found: C, 59.66; H, 5.28; N, 3.29.

Workup

  1. waitAfter 17 hours
  2. filtrationThe resulting suspension was filtered
  3. washthe solid was washed with water (2×25 mL)
  4. customdried in a vacuum oven overnight (60° C., <1 torr)

Sources & evidence

ORD record
ord-8ae68563e84e496aa40c900b24c1d11c
Source dataset
uspto-grants-2000_01
Patent number
US06011050

Reaction notes

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