Hydrochloric Acid → methyl (4E)-4-[[3,5-dimethoxy-4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-4-phenylbutanoate

HRID 1070199ノート

反応式

HRID 1070199 の反応式
Cl[CH2:2][C:3]1[CH:22]=[C:21]([O:23][CH3:24])[C:6]([O:7][CH2:8][C:9]2[N:10]=[C:11]([C:15]3[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=3)[O:12][C:13]=2[CH3:14])=[C:5]([O:25][CH3:26])[CH:4]=1.[OH:27]/[N:28]=[C:29](/[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)\[CH2:30][CH2:31][C:32]([O:34][CH3:35])=[O:33].[H-].[Na+].Cl>CN(C)C=O.O>[CH3:26][O:25][C:5]1[CH:4]=[C:3]([CH:22]=[C:21]([O:23][CH3:24])[C:6]=1[O:7][CH2:8][C:9]1[N:10]=[C:11]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[O:12][C:13]=1[CH3:14])[CH2:2][O:27]/[N:28]=[C:29](/[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)\[CH2:30][CH2:31][C:32]([O:34][CH3:35])=[O:33]

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 24758Sodium hydrideHCID 12137371methyl (4E)-4-hydroxyimino-4-phenylbutanoateHCID 223446054-(4-Chloromethyl-2,6-dimethoxyphenoxymethyl)-5-methyl-2-phenyloxazole

生成物 1

HCID 22344619methyl (4E)-4-[[3,5-dimethoxy-4-[(5-methyl-2-phenyl-1,3-oxazol-4-yl)methoxy]phenyl]methoxyimino]-4-phenylbutanoate収率 66.6%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

To a stirred solution of 4-(4-chloromethyl-2,6-dimethoxyphenoxymethyl)-5-methyl-2-phenyloxazole (1.00 g) and methyl E-4hydroxyimino-4-phenylbutyrate (585 mg) in N,N-dimethylformamide (40 ml) was added sodium hydride (60% in oil, 115 mg) at 0° C. After stirring for 2 hours, the reaction mixture was poured into water, neutralized with 2N hydrochloric acid, and extracted with ethyl acetate. The extract was washed with water, dried (MgSO4), and concentrated. The residue was purified by column chromatography on silica gel. Elution with ethyl acetate-hexane (1:3, v/v) gave methyl E-4-[3,5-dimethoxy-4-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzyloxyimino]-4-phenylbutyrate (970 mg, yield 65%) as a colorless oil.

後処理

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography on silica gel
  6. washElution with ethyl acetate-hexane (1:3

出典と根拠

ORDレコード
ord-6eb3e75e57d14c31bb138e7f3232e411
出典データセット
uspto-grants-2001_06
特許番号
US06251926B1

反応ノート

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