Acetic Acid → cis-4-[(3,5-Bis-trifluoromethyl-benzyl)-amino]-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester

HRID 279366ノート

反応式

HRID 279366 の反応式
[CH2:1]([O:3][C:4]([N:6]1[C:15]2[C:10](=[CH:11][C:12]([O:18][CH3:19])=[C:13]([O:16][CH3:17])[CH:14]=2)[C@H:9]([NH2:20])[CH2:8][C@@H:7]1[CH3:21])=[O:5])[CH3:2].C(O)(=O)C.[F:26][C:27]([F:41])([F:40])[C:28]1[CH:29]=[C:30]([CH:33]=[C:34]([C:36]([F:39])([F:38])[F:37])[CH:35]=1)[CH:31]=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])[O-].[K+].[K+]>ClC(Cl)C.O>[CH2:1]([O:3][C:4]([N:6]1[C:15]2[C:10](=[CH:11][C:12]([O:18][CH3:19])=[C:13]([O:16][CH3:17])[CH:14]=2)[C@H:9]([NH:20][CH2:31][C:30]2[CH:33]=[C:34]([C:36]([F:38])([F:39])[F:37])[CH:35]=[C:28]([C:27]([F:26])([F:40])[F:41])[CH:29]=2)[CH2:8][C@@H:7]1[CH3:21])=[O:5])[CH3:2]

参加物

8

反応物 5

HCID 176Acetic AcidHCID 11430Potassium CarbonateHCID 1362473,5-Bis(trifluoromethyl)benzaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 69832909cis-4-amino-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester

生成物 1

HCID 86755983cis-4-[(3,5-Bis-trifluoromethyl-benzyl)-amino]-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester収率 70.8%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 63651,1-Dichloroethane溶媒

実験手順

A solution of cis-4-amino-6,7-dimethoxy-2-methyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester (527 mg, 1.8 mmol) in dichloroethane (12 mL) was treated sequentially with acetic acid (0.1 mL, 1.8 mmol) and 3,5-bis-trifluoromethyl-benzaldehyde (0.30 mL, 1.8 mmol). After stirring 35 minutes at room temperature, sodium triacetoxyborohydride (570 mg, 2.7 mmol) was added to the mixture. After 3 days, 20 mL of water was added and the mixture made basic (pH 10) with potassium carbonate. The mixture was extracted with ethyl acetate (3×35 mL), the combined organic layers were washed with brine (20 mL), dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography eluting with 0-20% ethyl acetate in hexanes to provide the title compound (663 mg). 1H NMR (CDCl3) δ1.22 (d, 3H), 1.3 (t, 3H), 1.5 (m, 1H), 2.6 (m, 1H), 3.55 (dd, 1H), 3.87 (s, 3H), 3.89 (s, 3H), 4.1-4.6 (m, 5H), 7.06 (s, 1H), 7.08 (s, 1H), 7.8 (s, 1H), 7.95 (s, 2H).

後処理

  1. waitAfter 3 days
  2. extractionThe mixture was extracted with ethyl acetate (3×35 mL)
  3. washthe combined organic layers were washed with brine (20 mL)
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by silica gel chromatography
  8. washeluting with 0-20% ethyl acetate in hexanes

出典と根拠

ORDレコード
ord-dd4a8541310f493b92aae20946c5d01e
出典データセット
uspto-grants-2002_03
特許番号
US06362198B1

反応ノート

読み込み中…