Acetic Anhydride → HCID 12803438, compound

HRID 1855828Notes

Reaction equation

HRID 1855828 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][N:5]1[CH:9]=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[NH:7][C:6]1=[O:16].[C:17](OC(=O)C)(=[O:19])[CH3:18]>>[CH3:1][O:2][CH2:3][CH2:4][N:5]1[CH:9]=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[N:7]([C:17](=[O:19])[CH3:18])[C:6]1=[O:16]

Participants

3

Reactant 2

HCID 7918Acetic AnhydrideHCID 12803422HCID 12803422, compound

Product 1

HCID 12803438HCID 12803438, compound

Procedure

Approximately 21.8 g of 1-(2-methoxyethyl)-4-phenyl-4-imidazolin-2-one and 120 ml. of acetic anhydride is refluxed together for four hours. The acetic anhydride is distilled out at reduced pressure. The residual semisolid is recrystallized from ethyl acetate to yield the title compound Formula (2) in Sequence 2 as a white solid; m.p. 81°-82° C.

Workup

  1. distillationThe acetic anhydride is distilled out at reduced pressure
  2. customThe residual semisolid is recrystallized from ethyl acetate

Sources & evidence

ORD record
ord-8f8a8c8838d54c7b907d4f89879b3cd7
Source dataset
uspto-grants-1980_08
Patent number
US04216331

Reaction notes

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