Water → (S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-3-hydroxy-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester 8-methyl ester

HRID 391762ノート

反応式

HRID 391762 の反応式
[CH3:1][O:2][C:3]([CH:5]1[CH2:14][C:13]2[C:8](=[CH:9][C:10]([OH:16])=[C:11]([OH:15])[CH:12]=2)[CH2:7][N:6]1[C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])=[O:4].[Cl:24][C:25]1[CH:26]=[C:27]([CH:39]=[CH:40][C:41]=1[Cl:42])[CH2:28][O:29][C:30]1[CH:35]=[CH:34][C:33]([C:36](=[O:38])[CH3:37])=[CH:32][CH:31]=1.C(=O)([O-])[O-].[K+].[K+].O>CN(C=O)C>[CH3:1][O:2][C:3]([CH:5]1[CH2:14][C:13]2[CH:12]=[C:11]3[O:15][CH2:37][C@@:36]([C:33]4[CH:34]=[CH:35][C:30]([O:29][CH2:28][C:27]5[CH:39]=[CH:40][C:41]([Cl:42])=[C:25]([Cl:24])[CH:26]=5)=[CH:31][CH:32]=4)([OH:38])[O:16][C:10]3=[CH:9][C:8]=2[CH2:7][N:6]1[C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])=[O:4]

参加物

6

反応物 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 27750311-(4-((3,4-Dichlorobenzyl)oxy)phenyl)ethanoneHCID 667196016,7-Dihydroxy-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester

生成物 1

HCID 66719236(S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-3-hydroxy-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester 8-methyl ester収率 63.5%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
100 °C

実験手順

6,7-Dihydroxy-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester (0.76 g) was dissolved in anhydrous DMF (20 mL). To this solution 1-[4-(3,4-dichloro-benzyloxy)-phenyl]-ethanone (0.93 g) and potassium carbonate (0.7 g) were added and heated to 100° C. The reaction mixture was stirred at this temperature for 12 hours. After the reaction was complete, the reaction mixture was poured into water and extracted with ethyl acetate (50 mL) and washed with brine (2×50 mL), dried over (sodium sulfate) and concentrated in vacuo to give the crude product. The residue was then purified by flash column chromatography (hexanes:ethyl acetate 90:10 to 60:40) to give the desired product, (S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-3-hydroxy-2,3,8,9-tetrahydro-6H-[1,4]dioxino[2,3-g]isoquinoline-7,8-dicarboxylic acid 7-tert-butyl ester 8-methyl ester (0.92 g). 1H NMR (400 MHz, CDCl3): 7.91 (d, 2H), 7.82 (d, 1H), 7.58 (d, 1H), 7.54 (d, 1H), 7.47 (m, 1H), 7.00 (m, 2H), 6.78 (m, 1H), 5.32 (s, 1H), 5.09 (s, 2H), 4.70 (m, 1H), 4.40 (m, 1H), 3.62 (s, 3H), 3.06 (m, 1H), 1.51 (s, 9H), 1.26 (m, 2H), and 0.88 (t, 2H).

後処理

  1. extractionextracted with ethyl acetate (50 mL)
  2. washwashed with brine (2×50 mL)
  3. dry with materialdried over (sodium sulfate)
  4. concentrationconcentrated in vacuo
  5. customto give the crude product
  6. customThe residue was then purified by flash column chromatography (hexanes:ethyl acetate 90:10 to 60:40)

出典と根拠

ORDレコード
ord-6314167919674194a6aabf978ff17f39
出典データセット
uspto-grants-2013_02
特許番号
US08383644B2

反応ノート

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