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Sodium Bicarbonate → tert-Butyl 5-(5-(5-(3-chloro-4-(thiophen-3-yl)phenyl)-1,2,4-oxadiazol-3-yl)benzofuran-2-yl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate

HRID 717697
ノート
印刷プレビュー

反応式

HRID 717697 の反応式
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[O:12][N:11]=[C:10]([C:13]3[CH:14]=[CH:15][C:16]4[O:20][C:19]([C:21]5([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33])[CH2:26][O:25][C:24]([CH3:28])([CH3:27])[O:23][CH2:22]5)=[CH:18][C:17]=4[CH:37]=3)[N:9]=2)=[CH:4][C:3]=1[Cl:38].[S:39]1[CH:43]=[CH:42][C:41](B(O)O)=[CH:40]1.C([O-])(O)=O.[Na+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:38][C:3]1[CH:4]=[C:5]([C:8]2[O:12][N:11]=[C:10]([C:13]3[CH:14]=[CH:15][C:16]4[O:20][C:19]([C:21]5([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33])[CH2:26][O:25][C:24]([CH3:28])([CH3:27])[O:23][CH2:22]5)=[CH:18][C:17]=4[CH:37]=3)[N:9]=2)[CH:6]=[CH:7][C:2]=1[C:41]1[CH:42]=[CH:43][S:39][CH:40]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 3

HCID 516892Sodium BicarbonateHCID 581760Thiophene-3-boronic acidHCID 86660623tert-Butyl 5-(5-(5-(4-bromo-3-chlorophenyl)-1,2,4-oxadiazol-3-yl)benzofuran-2-yl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate

生成物 1

HCID 86660624tert-Butyl 5-(5-(5-(3-chloro-4-(thiophen-3-yl)phenyl)-1,2,4-oxadiazol-3-yl)benzofuran-2-yl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate収率 71.3%

試薬・触媒・溶媒 3

HCID 178418397
HCID 178418397、化合物
触媒
HCID 962Water溶媒
HCID 312751,4-Dioxane溶媒

実験手順

To a stirred mixture of the product of Example 38, Step C (0.09 g, 0.15 mmol) and 3-thiophene-boronic acid (0.028 g, 0.22 mmol) in a mixture of dioxane and H2O (5 ml:1 ml), Pd(PPh3)4 (0.03 g) was added at 80° C., followed by the NaHCO3 solution (0.065 g in 1 ml H2O) and this was stirred for 2 h. The solvent was distilled off and the residue was diluted to 20 ml with EtOAc, washed with H2O, dried over MgSO4 and filtered. The filtrate was evaporated and the residue was purified by FCC (SiO2, hexane/EtOAc), to give the title compound (0.065 g, 71%), as pale paste. 1H-NMR (CDCl3) 8.45 (d, 1H, J=1.53 Hz); 8.25-8.22 (m, 2H); 7.94 (dd, 1H, J=8.7, 1.8 Hz); 7.55-7.42 (m, 3H); 7.38-7.37 (m, 2H); 6.78 (s, 1H); 5.43 (bs, 1H); 4.29-4.13 (m, 4H); 1.46 (s, 9H); 1.27 (b, 6H).

後処理

  1. additionwas added at 80° C.
  2. distillationThe solvent was distilled off
  3. additionthe residue was diluted to 20 ml with EtOAc
  4. washwashed with H2O
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. customThe filtrate was evaporated
  8. customthe residue was purified by FCC (SiO2, hexane/EtOAc)

出典と根拠

ORDレコード
ord-344ab597c5cb42439cdfc023ff634416
出典データセット
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09193716B2

反応ノート

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