Hydrochloric Acid → HCID 178428950, compound

HRID 368528Notes

Reaction equation

HRID 368528 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([CH2:9][O:10][C:11]2[CH:12]=[C:13]([O:18][S:19]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[Cl:28])(=[O:21])=[O:20])[CH:14]=[C:15]([CH3:17])[CH:16]=2)[CH:6]=[CH:7][CH:8]=1)#[N:2].[ClH:29].Cl.[NH2:31][OH:32].C([O-])([O-])=O.[Na+].[Na+]>C(Cl)Cl.C(O)C>[ClH:28].[OH:32][NH:31][C:1]([C:3]1[CH:4]=[C:5]([CH2:9][O:10][C:11]2[CH:12]=[C:13]([O:18][S:19]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[Cl:29])(=[O:21])=[O:20])[CH:14]=[C:15]([CH3:17])[CH:16]=2)[CH:6]=[CH:7][CH:8]=1)=[NH:2]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 10340Sodium CarbonateHCID 443297Hydroxyamine hydrochlorideHCID 540597372-Chlorobenzenesulfonic acid 3-[(3-cyanophenyl)methoxy]-5-methylphenyl ester

Product 1

HCID 178428950HCID 178428950, compoundYield 39%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 2-chlorobenzenesulfonic acid 3-[(3-cyanophenyl) methoxy]-5-methylphenyl ester (207 mg, 0.5 mmol), as prepared in step (a) of the Example 6, in methylene chloride (10 mL) was added 37% HCl in ethanol (10 mL) at 0° C. The mixture was allowed to stand at 0° C. for 3 days. The solvent was removed in vacuo and the residue was co-evaporated with methylene chloride several times. The residue was dissolved in ethanol (10 mL) and then treated with hydroxylamine hydrochloride (140 mg, 2.0 mmol) and Na2CO3 (106 mg, 1.0 mmol). The reaction mixture was stirred at room temperature for 2 days. Methylene chloride (150 mL) was added to the mixture, washed with 10% K2CO3 (2×50 mL), and dried over K2CO3. The solvent was removed in vacuo, HCl in methanol (30 mL) added and the solvent removed in vacuo. The residue was purified by flash chromatography (1:1 ethyl acetate/methylene chloride) to give the title compound as a white foam (95 mg, 39%). 1H-NMR (300 MHz, CDCl3) δ 2.25 (s, 3 H), 4.89 (br s, 1 H), 4.98 (d, 2 H, J=10.7 Hz), 5.58 (br s, 1 H), 6.15 (br s, 1 H), 7.33-7.64 (m, 6 H), 7.76-7.83 (m, 1 H), and 7.92 (d, 1 H, J=4.0 Hz). Mass spectrum (MALDI-TOF, sinapinic acid matrix) calcd. for C21H19N2O5SCl: 447.1 (M+H), 469.1 (M+Na). Found: 447.1, 469.2.

Workup

  1. customThe solvent was removed in vacuo
  2. dissolutionThe residue was dissolved in ethanol (10 mL)
  3. washwashed with 10% K2CO3 (2×50 mL)
  4. dry with materialdried over K2CO3
  5. customThe solvent was removed in vacuo, HCl in methanol (30 mL)
  6. additionadded
  7. customthe solvent removed in vacuo
  8. customThe residue was purified by flash chromatography (1:1 ethyl acetate/methylene chloride)

Sources & evidence

ORD record
ord-58cfa6bbe49b4c2bb4bf06bad9552e47
Source dataset
uspto-grants-2000_10
Patent number
US06133315

Reaction notes

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