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Formaldehyde → 2-(2-Methoxy-6-nitrophenyl)-1-ethanol

HRID 1582436
ノート
印刷プレビュー

反応式

HRID 1582436 の反応式
[CH3:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[CH:4][C:3]=1[O:11][CH3:12].C=O.C[C:16](C)([O-:18])C.[K+].C1COCC1>CS(C)=O.O.C(OCC)(=O)C>[CH3:12][O:11][C:3]1[CH:4]=[CH:5][CH:6]=[C:7]([N+:8]([O-:10])=[O:9])[C:2]=1[CH2:1][CH2:16][OH:18]
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 712FormaldehydeHCID 785542-Methyl-3-nitroanisoleHCID 66863523KOtBu THF

生成物 1

HCID 227203652-(2-Methoxy-6-nitrophenyl)-1-ethanol収率 71%

試薬・触媒・溶媒 3

HCID 679Dimethyl Sulfoxide溶媒HCID 962Water溶媒
HCID 8857
Ethyl Acetate
溶媒

実験手順

In a dry 25 mL flask 0.17 mg (1.0 mmol) of 2-methyl-3-nitroanisole is combined with 30 mg (0.97 mmol) paraformaldehyde in 7 mL of dimethylsulfoxide (sure-seal). This solution is treated with 1M Potassium t-butoxide/THF (0.20 mL) with the reaction mixture becoming bright red in color. After 2 hours the reaction mixture is diluted with water and ethyl acetate is added. The layers are separated followed by two ethyl acetate extractions. The organics are combined, washed with brine, dried over MgSO4, filtered, and concentrated to give a crude yellow oil that solidifies overnight. This material is purified by LC (45% ethyl acetate/heptane) to yield 140 mg (71%) of 2-(2-methoxy-6-nitrophenyl)-1-ethanol as a pale yellow solid. 1H NMR (300 MHz, DMSO-d6) δ2.90 (t, J=7 Hz, 2H), 3.50 (q, J=7 Hz, 2H), 3.88 (s, 3H), 4.74 (t, J=5 Hz, 1H), 7.32 (dd, J=2, 8 Hz, 1H), 7.46-7.36 (m, 2H); 13C NMR (75 MHz, CDCl3) δ158.5, 127.8, 116.2, 114.2, 62.0, 56.3, 29.2; IR (drift) 1536, 1469, 1458, 1352, 1279, 1266, 1217, 1065, 1040, 1031, 1014, 895, 806, 796, 740 cm−1.

後処理

  1. additionis added
  2. customThe layers are separated
  3. extractionfollowed by two ethyl acetate extractions
  4. washwashed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto give a crude yellow oil
  9. customThis material is purified by LC (45% ethyl acetate/heptane)

出典と根拠

ORDレコード
ord-a0ac60fa45974f05ae0a5532af8fcbfa
出典データセット
uspto-grants-2004_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06734301B2

反応ノート

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