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Potassium Carbonate → 2-hydroxy-6-((5-(1-isopropyl-1H-pyrazol-5-yl)-3,6-dihydro-2H-pyran-4-yl)methoxy)benzaldehyde

HRID 1770803
ノート
印刷プレビュー

反応式

HRID 1770803 の反応式
Br[CH2:2][C:3]1[CH2:8][CH2:7][O:6][CH2:5][C:4]=1[C:9]1[N:13]([CH:14]([CH3:16])[CH3:15])[N:12]=[CH:11][CH:10]=1.[OH:17][C:18]1[CH:25]=[CH:24][CH:23]=[C:22]([OH:26])[C:19]=1[CH:20]=[O:21].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O.CCOC(C)=O>[OH:17][C:18]1[CH:25]=[CH:24][CH:23]=[C:22]([O:26][CH2:2][C:3]2[CH2:8][CH2:7][O:6][CH2:5][C:4]=2[C:9]2[N:13]([CH:14]([CH3:16])[CH3:15])[N:12]=[CH:11][CH:10]=2)[C:19]=1[CH:20]=[O:21]
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 11430Potassium CarbonateHCID 102858012,6-DihydroxybenzaldehydeHCID 904080795-(4-(bromomethyl)-5,6-dihydro-2H-pyran-3-yl)-1-isopropyl-1H-pyrazole

生成物 1

HCID 862954162-hydroxy-6-((5-(1-isopropyl-1H-pyrazol-5-yl)-3,6-dihydro-2H-pyran-4-yl)methoxy)benzaldehyde収率 69.2%

試薬・触媒・溶媒 3

HCID 962Water溶媒
HCID 6228
Dimethylformamide
溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of 5-(4-(bromomethyl)-5,6-dihydro-2H-pyran-3-yl)-1-isopropyl-1H-pyrazole (110 mg, 0.38 mmol) and 2,6-dihydroxybenzaldehyde (100 mg, 0.76 mmol) in DMF (6 mL) was added K2CO3 (110 mg, 0.76 mmol). After stirred at room temperature for 1 h, it was diluted with water and EtOAc, organic layer was separated, and the aqueous layer was extracted with EtOAc. Organic layer was combined, washed with brine, dried and concentrated to give crude product, which was purified by column (Hexanes/EtOAc=1:1) to give 2-hydroxy-6-((5-(1-isopropyl-1H-pyrazol-5-yl)-3,6-dihydro-2H-pyran-4-yl)methoxy)benzaldehyde (90 mg). 1H NMR (400 MHz, CDCl3) δ (ppm) 11.89 (s, 1H), 10.33 (s, 1H), 7.53 (d, J=1.6 Hz, 1H), 7.33 (t, J=8.8 Hz, 1H), 6.51 (d, J=8.8 Hz, 1H), 6.16 (d, J=8.0 Hz, 1H), 6.08 (d, J=2.0 Hz, 1H), 4.40 (dd, J=12.8, 6.4 Hz, 1H), 4.35 (s, 2H), 4.18 (s, 2H), 3.97 (t, J=5.2 Hz, 2H), 2.44 (s, 2H), 1.40 (d, J=6.4 Hz, 6H); MS (ESI) m/z 343.3 [M+H]+.

後処理

  1. customwas separated
  2. extractionthe aqueous layer was extracted with EtOAc
  3. washwashed with brine
  4. customdried
  5. concentrationconcentrated
  6. customto give crude product, which
  7. customwas purified by column (Hexanes/EtOAc=1:1)

出典と根拠

ORDレコード
ord-ec6b26760f884cd1a7a9edd5b66e23d0
出典データセット
uspto-grants-2016_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09248199B2

反応ノート

読み込み中…

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