Hydrochloric Acid → HCID 178474162, compound

HRID 640885Notes

Reaction equation

HRID 640885 reaction equation
[O:1]=[C:2]1[CH2:10][C:9]2[C:4](=[CH:5][C:6]([C:11]([C:13]3[CH:14]=[C:15]([NH:19][C:20](=[O:22])[CH3:21])[CH:16]=[CH:17][CH:18]=3)=[O:12])=[CH:7][CH:8]=2)[NH:3]1.[CH:23](OCC)=[O:24].[O-]CC.[Na+].Cl>C(O)C>[OH:24][CH:23]=[C:10]1[C:9]2[C:4](=[CH:5][C:6]([C:11]([C:13]3[CH:14]=[C:15]([NH:19][C:20](=[O:22])[CH3:21])[CH:16]=[CH:17][CH:18]=3)=[O:12])=[CH:7][CH:8]=2)[NH:3][C:2]1=[O:1]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8025Ethyl formateHCID 2723922Sodium ethoxideHCID 68697379HCID 68697379, compound

Product 1

HCID 178474162HCID 178474162, compoundYield 71.7%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent2×

Conditions

Temperature
78 °C

Procedure

N-[3-(2-Oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-acetamide (0.957 g, 3.25 mmol) and ethyl formate (0.781 mL, 9.75 mmol) were dissolved in anhydrous ethanol (6.50 mL). The resulting solution was treated in dropwise fashion with a 21 wt % solution of sodium ethoxide in ethanol (6.07 mL, 16.26 mmol). This reaction mixture was heated at 78° C. for 1 h, producing a black oil. Subsequently, the reaction mixture was cooled to room temperature, and then the reaction pH was adjusted to pH 1 with dropwise addition of 1M HCl(aq) causing the formation of a pale orange precipitate. The suspension was filtered yielding an orange solid as the pure N-[3-(3-Hydroxymethylene-2-oxo-2,3-dihydro-1H-indole-6-carbonyl)-phenyl]-acetamide (0.752 g, 2.33 mmol, 71%).

Workup

  1. customproducing a black oil
  2. temperatureSubsequently, the reaction mixture was cooled to room temperature
  3. filtrationThe suspension was filtered

Sources & evidence

ORD record
ord-a6fb2bad4e2446ec9d8030779213aded
Source dataset
uspto-grants-2010_04
Patent number
US07692005B2

Reaction notes

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