Sodium borohydride → N-cyclohexyl-4-(hydroxymethyl)-3-methyl-N-(1-cyclopentyl)benzamide

HRID 1463836ノート

反応式

HRID 1463836 の反応式
[CH:1]1([N:7]([CH:19]2[CH2:23][CH2:22][CH2:21][CH2:20]2)[C:8](=[O:18])[C:9]2[CH:14]=[CH:13][C:12]([CH:15]=[O:16])=[C:11]([CH3:17])[CH:10]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[BH4-].[Na+]>CO>[CH:1]1([N:7]([CH:19]2[CH2:23][CH2:22][CH2:21][CH2:20]2)[C:8](=[O:18])[C:9]2[CH:14]=[CH:13][C:12]([CH2:15][OH:16])=[C:11]([CH3:17])[CH:10]=2)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

参加物

4

反応物 2

HCID 4311764Sodium borohydrideHCID 53901059HCID 53901059、化合物

生成物 1

HCID 19088660N-cyclohexyl-4-(hydroxymethyl)-3-methyl-N-(1-cyclopentyl)benzamide収率 106.7%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
0 °C

実験手順

The aldehyde XXXIV of Scheme K (1.70 g, 0.0052 moles) was dissolved in 20 mls of MeOH and cooled to 0° C. under argon. NaBH4 (110 mg) was added and the mixture was allowed to warm to 25° C. Excess solvent was removed under vacuum and the residue was treated with water and ethyl acetate. The organic layer was separated and dried (Na2SO4). Removal of the solvent on the rotary evaporator gave a residue which was chromatographed on silica gel using 30% ethyl acetate/hexane as the eluent to give 1.75 g (96%) of the title compound as an oil. NMR (ppm, CDCl3): 2.28 (3H, s); 4.65 (2H, s); 7.10 (1H, d, J=8 Hz); 7.15 (1 h, s); 7.30 (1 h, d, J=8 Hz).

後処理

  1. temperatureto warm to 25° C
  2. customExcess solvent was removed under vacuum
  3. additionthe residue was treated with water and ethyl acetate
  4. customThe organic layer was separated
  5. dry with materialdried (Na2SO4)
  6. customRemoval of the solvent
  7. customon the rotary evaporator
  8. customgave a residue which
  9. customwas chromatographed on silica gel using 30% ethyl acetate/hexane as the eluent

出典と根拠

ORDレコード
ord-6fc3af6e0bb44dfdb6b64373ea6d79fa
出典データセット
uspto-grants-1994_04
特許番号
US05302601

反応ノート

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