Monobenzone → Methyl 2-[(4-{3-[4-(benzyloxy)phenoxy]propyl}phenoxy)methyl]benzoate

HRID 2112020

反応式

HRID 2112020 の反応式
[OH:1][CH2:2][CH2:3][CH2:4][C:5]1[CH:22]=[CH:21][C:8]([O:9][CH2:10][C:11]2[CH:20]=[CH:19][CH:18]=[CH:17][C:12]=2[C:13]([O:15][CH3:16])=[O:14])=[CH:7][CH:6]=1.[CH2:23]([O:30][C:31]1[CH:36]=[CH:35][C:34](O)=[CH:33][CH:32]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(P(=CC#N)(CCCC)CCCC)CCC>C1(C)C=CC=CC=1>[CH2:23]([O:30][C:31]1[CH:36]=[CH:35][C:34]([O:1][CH2:2][CH2:3][CH2:4][C:5]2[CH:6]=[CH:7][C:8]([O:9][CH2:10][C:11]3[CH:20]=[CH:19][CH:18]=[CH:17][C:12]=3[C:13]([O:15][CH3:16])=[O:14])=[CH:21][CH:22]=2)=[CH:33][CH:32]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1

参加物

5

反応物 3

HCID 7638MonobenzoneHCID 4622928CyanomethylenetributylphosphoraneHCID 10780567Methyl 2-((4-(3-hydroxypropyl)phenoxy)methyl)benzoate

生成物 1

HCID 68869717Methyl 2-[(4-{3-[4-(benzyloxy)phenoxy]propyl}phenoxy)methyl]benzoate収率 64.3%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

Methyl 2-{[4-(3-hydroxypropyl)phenoxy]methyl}benzoate (0.50 g, 1.66 mmol) and 4-(benzyloxy)phenol (0.33 g, 1.66 mmol) was added to a dry round bottomed flask and fitted with septa. Dry toluene (10 ml) was added and N2 was flushed through the mixture for 5 minutes. (Tributylphosphoranylidene)acetonitrile (0.80 g, 3.33 mmol) was added dropwise and the reaction was performed in a single node microwave oven. After removing the solvent by evaporation the crude was purified by preparative HPLC (started with acetonitrile/buffer 60/40 and then the acetonitrile concentration was increased to 100%, the buffer was a mixture of acetonitrile/water 10/90 and ammonium acetate (0.1 M, column KR-100-7-C8, 50 mm×250 mm, flow 40 ml/min)). The product containing fractions were pooled and the acetonitrile was removed by evaporation. EtOAc (10 ml) was added and the organic phase was washed with two portions of brine and dried (MgSO4). Removing the solvent by evaporation gave 0.515 gram of methyl 2-[(4-{3-[4-(benzyloxy)phenoxy]-propyl}phenoxy)methyl]benzoate (yield 64.1%).

後処理

  1. customfitted with septa
  2. customN2 was flushed through the mixture for 5 minutes
  3. customthe reaction was performed in a single node microwave oven
  4. customAfter removing the solvent
  5. customby evaporation the crude
  6. customwas purified by preparative HPLC (
  7. concentrationthe acetonitrile concentration
  8. temperaturewas increased to 100%
  9. additiona mixture of acetonitrile/water 10/90 and ammonium acetate (0.1 M, column KR-100-7-C8, 50 mm×250 mm, flow 40 ml/min))
  10. additionThe product containing fractions
  11. customthe acetonitrile was removed by evaporation
  12. additionEtOAc (10 ml) was added
  13. washthe organic phase was washed with two portions of brine
  14. dry with materialdried (MgSO4)
  15. customRemoving the solvent
  16. customby evaporation

出典と根拠

ORDレコード
ord-9fb6f32fdec04722885b08012bd35f01
出典データセット
uspto-grants-2009_04
特許番号
US07521461B2

関連ノート

読み込み中…