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Dimethylformamide → 5-bromo-6-methoxy-2,3-dihydro-1H-indene

HRID 1063253
ノート
印刷プレビュー

反応式

HRID 1063253 の反応式
CI.[Br:3][C:4]1[CH:12]=[C:11]2[C:7]([CH2:8][CH2:9][CH2:10]2)=[CH:6][C:5]=1[OH:13].[C:14]([O-])([O-])=O.[K+].[K+].CN(C=O)C>O>[CH3:14][O:13][C:5]1[CH:6]=[C:7]2[C:11](=[CH:12][C:4]=1[Br:3])[CH2:10][CH2:9][CH2:8]2.[Br:3][C:4]1[CH:12]=[C:11]2[C:7]([CH2:8][CH2:9][CH2:10]2)=[CH:6][C:5]=1[OH:13]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 6228DimethylformamideHCID 6328Methyl iodide2 回HCID 11430Potassium CarbonateHCID 156453446-Bromo-2,3-dihydro-1H-inden-5-ol

生成物 2

HCID 152482825-bromo-6-methoxy-2,3-dihydro-1H-indene収率 74%HCID 156453446-Bromo-2,3-dihydro-1H-inden-5-ol収率 19%

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
51 °C

実験手順

Four oven dried 40 mL vials with Teflon lined caps were used in parallel for the reaction. The sealed vials were used to avoid loss of MeI. Each of the the vials was loaded with a fourth of 6-bromoindan-5-ol (12.01 g, 56.36 mmol), K2CO3 (15.58 g, 112.72 mmol), DMF (147.5 mL) and MeI (14.03 mL, 225.45 mmol) respectfully. The vials were sealed and heated on the orbital shaker for a total of 11 hours at 51° C. The reactions in the four vials were combined, poured in water and extracted twice with ethyl acetate. The organics were combined, dried with Na2SO4, filtered and concentrated to give 12.6 grams of a crude yellow oil. The crude was purified using the in two batches (120 g columns, 5% ethyl acetate). Like fractions were combined to give 9.53 grams (74%) of 6-bromo-2,3-dihydro-1H-inden-5-yl methyl ether as a white solid and 2.29 grams (19%) of recovered 6-bromoindan-5-ol. IR (diffuse reflectance) 2958, 2468, 2428, 2415, 2350, 2337, 1482, 1466, 1392, 1311, 1278, 1260, 865, 835, 733 cm−1. Anal. Calcd for C10H11BrO: C, 52.89; H, 4.88; Br, 35.18. Found: C, 52.87; H, 4.79; N, 0.21. Found: Br, 35.27. X-Ray supports the structure.

後処理

  1. dry with materialFour oven dried 40 mL vials with Teflon lined caps
  2. customwere used in parallel for the reaction
  3. customThe vials were sealed
  4. extractionextracted twice with ethyl acetate
  5. dry with materialdried with Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto give 12.6 grams of a crude yellow oil
  9. customThe crude was purified

出典と根拠

ORDレコード
ord-21d46df51fc646efaffcf4a301244a16
出典データセット
uspto-grants-2005_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06964965B2

反応ノート

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