4-Chlorobenzaldehyde → N-(5-(4-cyanobenzyloxy)-2-(4-chlorobenzylamino)benzoyl)-b-alanine ethyl ester

HRID 1488706ノート

反応式

HRID 1488706 の反応式
[CH2:1]([O:3][C:4](=[O:27])[CH2:5][CH2:6][NH:7][C:8](=[O:26])[C:9]1[CH:14]=[C:13]([O:15][CH2:16][C:17]2[CH:22]=[CH:21][C:20]([C:23]#[N:24])=[CH:19][CH:18]=2)[CH:12]=[CH:11][C:10]=1[NH2:25])[CH3:2].[Cl:28][C:29]1[CH:36]=[CH:35][C:32]([CH:33]=O)=[CH:31][CH:30]=1.C([SiH](CC)CC)C>C1(C)C=CC=CC=1.C1(C)C=CC(S(O)(=O)=O)=CC=1>[CH2:1]([O:3][C:4](=[O:27])[CH2:5][CH2:6][NH:7][C:8](=[O:26])[C:9]1[CH:14]=[C:13]([O:15][CH2:16][C:17]2[CH:18]=[CH:19][C:20]([C:23]#[N:24])=[CH:21][CH:22]=2)[CH:12]=[CH:11][C:10]=1[NH:25][CH2:33][C:32]1[CH:35]=[CH:36][C:29]([Cl:28])=[CH:30][CH:31]=1)[CH3:2]

参加物

6

反応物 3

HCID 77264-ChlorobenzaldehydeHCID 12052TriethylsilaneHCID 19700602HCID 19700602、化合物

生成物 1

HCID 22905094N-(5-(4-cyanobenzyloxy)-2-(4-chlorobenzylamino)benzoyl)-b-alanine ethyl ester収率 59.5%

試薬・触媒・溶媒 2

HCID 6101p-Toluenesulfonic acid触媒HCID 1140Toluene溶媒

実験手順

A solution of 1.03 g (2.80 mmol) of N-(5-(4-cyanobenzyloxy)-2-aminobenzoyl)-b-alanine ethyl ester, 394 mg (2.80 mmol) of p-chlorobenzaldehyde, and 20 mg of p-toluenesulfonic acid in 30 mL of toluene was heated at reflux through a Dean-Stark trap for 45 min. The solvent was removed in vacuo and the residue was dissolved in 15 mL of trifluoroacetic acid. Triethylsilane (1.34 mL, 8.40 mmol) was added and the mixture was stirred at room temperature for 12 h, concentrated in vacuo, and partitioned between 1N aqueous sodium bicarbonate and ethyl acetate. The organic phase was washed with water, brine, dried over anhydrous magnesium sulfate, and concentrated. Chromatography (silica gel-60, 2:3 ethyl acetate/hexane) gave 820 mg (59%) of N-(5-(4-cyanobenzyloxy)-2-(4-chlorobenzylamino)benzoyl)-b-alanine ethyl ester as a colorless solid. 1H NMR (300 MHz, CDCl3) d 7.66 (2H, d, J=7.8 Hz, NC-Ar-H2), 7.51 (2H, d, J=7.8 Hz, NC-Ar-H2), 7.27 (4H, s, ClArH4), 6.98 (1H, d, J=2.0 Hz, O-Ar-H), 6.89 (1H, dd, J=2.0, 9.3 Hz, O-Ar-H), 6.78 (1H, b, N-H), 6.66 (1H, d, J=9.3 Hz, O-Ar-H), 5.03 (2H, s, ArCH2O), 4.32 (2H, s, ClArCH2), 4.17 (2H, q, J=7.3 Hz, OCH2CH3), 3.65 (2H, bq, J=5.7 Hz, NHCH2CH2), 2.62 (2H, t, J=5.7 Hz, NHCH2CH2), 1.28 (3H, t, J=7.3 Hz, OCH2 CH3); Exact mass (FAB, M+H+) calcd for C27H27 ClN3O4 : 492.1690; Found: 492.1681.

後処理

  1. temperatureat reflux through a Dean-Stark trap for 45 min
  2. customThe solvent was removed in vacuo
  3. dissolutionthe residue was dissolved in 15 mL of trifluoroacetic acid
  4. concentrationconcentrated in vacuo
  5. custompartitioned between 1N aqueous sodium bicarbonate and ethyl acetate
  6. washThe organic phase was washed with water, brine
  7. dry with materialdried over anhydrous magnesium sulfate
  8. concentrationconcentrated

出典と根拠

ORDレコード
ord-b6f0ca7ef5484284866fcf76c4819599
出典データセット
uspto-grants-1997_10
特許番号
US05674863

反応ノート

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