1,4-Dioxane → HCID 23361366、化合物

HRID 233287ノート

反応式

HRID 233287 の反応式
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[O:9][C:10]([CH3:31])=[C:11]([CH2:13][CH2:14][O:15][C:16]2[CH:30]=[CH:29][C:19]([CH:20]=[C:21]([C:27]#[N:28])[C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:18][CH:17]=2)[N:12]=1.O1CCOCC1.[BH4-].[Na+]>C(O)C>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[O:9][C:10]([CH3:31])=[C:11]([CH2:13][CH2:14][O:15][C:16]2[CH:17]=[CH:18][C:19]([CH2:20][CH:21]([C:27]#[N:28])[C:22]([O:24][CH2:25][CH3:26])=[O:23])=[CH:29][CH:30]=2)[N:12]=1

参加物

5

反応物 3

HCID 312751,4-DioxaneHCID 4311764Sodium borohydrideHCID 54471283HCID 54471283、化合物

生成物 1

HCID 23361366HCID 23361366、化合物収率 99.5%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

実験手順

To a mixture of ethyl 4-[2-[2-(2-chlorophenyl)-5-methyl-4-oxazolyl]ethoxy]-α-cyanocinnamate (2.25 g) and dioxane (30 ml)--ethanol (30 ml) was added sodium borohydride (0.06 g) under ice-cooling. The mixture was stirred for one hour at the same temperature. The reaction mixture was poured into ice-water, which was made acid and subjected to extraction with ethyl acetate. The ethyl acetate layer was washed with water and dried (MgSO4), then the solvent was distilled off under reduced pressure. The residue was subjected to a silica gel column chromatography. From the fractions eluted with chloroform-methanol (50:1, v/v), was obtained ethyl 3-[4-[2-[2-(2-chlorophenyl)-5-methyl-4-oxazolyl]ethoxy]phenyl]-2-cyanopropionate (2.25 g, quant.) as an oily product. NMR(δ ppm in CDCl3): 1.27(3H,t,J=7Hz), 2.39(3H,s), 3.00(2H,t,J=6.5Hz), 3.12(1H,dd,J=14&8Hz), 3.22(1H,dd,J=14&6Hz), 3.66(1H,dd,J=8&6Hz), 4.22(2H,q,J=7Hz), 4.24(2H,t,J=6.5Hz), 6.87(2H,d,J=9Hz), 7.17(2H,d,J=9Hz), 7.25-7.5(3H,m), 7.85-8.0(1H,m).

後処理

  1. temperaturecooling
  2. extractionsubjected to extraction with ethyl acetate
  3. washThe ethyl acetate layer was washed with water
  4. dry with materialdried (MgSO4)
  5. distillationthe solvent was distilled off under reduced pressure
  6. washFrom the fractions eluted with chloroform-methanol (50:1

出典と根拠

ORDレコード
ord-d9adc0af8aed40079fabb92dd0acb956
出典データセット
uspto-grants-1997_01
特許番号
US05591862

反応ノート

読み込み中…