N-(2,2-diethoxyethyl)-N'-(2,4-difluorophenyl)urea → 1-(2,4-difluorophenyl)-2(1H,3H)-imidazolone

HRID 129158ノート

反応式

HRID 129158 の反応式
C(O[CH:4](OCC)[CH2:5][NH:6][C:7]([NH:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17])=[O:8])C>CO.O.Cl>[F:17][C:11]1[CH:12]=[C:13]([F:16])[CH:14]=[CH:15][C:10]=1[N:9]1[CH:4]=[CH:5][NH:6][C:7]1=[O:8]

参加物

5

反応物 1

HCID 19065111N-(2,2-diethoxyethyl)-N'-(2,4-difluorophenyl)urea

生成物 1

HCID 190650921-(2,4-difluorophenyl)-2(1H,3H)-imidazolone収率 89.4%

試薬・触媒・溶媒 3

HCID 313Hydrochloric Acid溶媒HCID 887Methanol溶媒HCID 962Water溶媒

実験手順

This urea (37.5 g) was dissolved in a mixture of 560 ml of methanol and 280 ml of water, and 300 ml of 0.48M hydrochloric acid was added thereto and the resulting mixture was stirred for three days at room temperature. The reaction solution was concentrated under reduced pressure. The crystals thus separated out were washed with a mixture of water and methanol (5:1) to give 22.8 g of 1-(2,4-difluorophenyl)-2(1H,3H)-imidazolone as a colorless powder.

後処理

  1. additionwas added
  2. concentrationThe reaction solution was concentrated under reduced pressure
  3. customThe crystals thus separated out
  4. washwere washed with a mixture of water and methanol (5:1)

出典と根拠

ORDレコード
ord-8d82a73fa4cf4fb9bf2139f0d84dd2a9
出典データセット
uspto-grants-1995_11
特許番号
US05466820

反応ノート

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