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Sodium Carbonate → 4-(4-Chloro-2-methoxybenzyl)pyridine

HRID 272743
ノート
印刷プレビュー

反応式

HRID 272743 の反応式
Br[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([Cl:9])=[CH:5][C:4]=1[O:10][CH3:11].[N:12]1[CH:17]=[CH:16][C:15](B(O)O)=[CH:14][CH:13]=1.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.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:9][C:6]1[CH:7]=[CH:8][C:3]([CH2:2][C:15]2[CH:16]=[CH:17][N:12]=[CH:13][CH:14]=2)=[C:4]([O:10][CH3:11])[CH:5]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 10340Sodium CarbonateHCID 2734379(Pyridin-4-yl)boronic acidHCID 223274741-(Bromomethyl)-4-chloro-2-methoxybenzene

生成物 1

HCID 692188594-(4-Chloro-2-methoxybenzyl)pyridine収率 34.6%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒
HCID 8071
1,2-Dimethoxyethane
溶媒

実験手順

A mixture of 1-bromomethyl-4-chloro-2-methoxy-benzene (50 mg, 0.21 mmol), 4-pyridyl boronic acid (39 mg, 0.32 mmol), Pd(PPh3)4 (24 mg, 0.021 mmol) and 2M Na2CO3 were combined in DME (2 mL), purged with N2, and heated to reflux for 3 hours. The mixture was then partitioned between ethyl acetate and water. The organic layer was washed with brine, dried (MgSO4), filtered, and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel with 1:1 hexanes/ethyl acetate to provide 17 mg (33%) of the title compound. MS (ESI) m/e 234 (M+H)+.

後処理

  1. custompurged with N2
  2. temperatureheated
  3. temperatureto reflux for 3 hours
  4. customThe mixture was then partitioned between ethyl acetate and water
  5. washThe organic layer was washed with brine
  6. dry with materialdried (MgSO4)
  7. filtrationfiltered
  8. concentrationconcentrated under vacuum
  9. customThe residue was purified by flash column chromatography on silica gel with 1:1 hexanes/ethyl acetate

出典と根拠

ORDレコード
ord-090b32f6f7524ba682018f2d47557378
出典データセット
uspto-grants-2008_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07456169B2

反応ノート

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