Ethyl Acetate → (5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 5-(tetradecyloxy)furan-2-carboxylate

HRID 335534

反応式

HRID 335534 の反応式
[CH2:1]([O:15][C:16]1[O:20][C:19]([C:21]([OH:23])=[O:22])=[CH:18][CH:17]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14].C(=O)([O-])[O-].[K+].[K+].Br[CH2:31][C:32]1[O:33][C:34](=[O:38])[O:35][C:36]=1[CH3:37].CCOC(C)=O>CN(C=O)C>[CH2:1]([O:15][C:16]1[O:20][C:19]([C:21]([O:23][CH2:31][C:32]2[O:33][C:34](=[O:38])[O:35][C:36]=2[CH3:37])=[O:22])=[CH:18][CH:17]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14]

参加物

6

反応物 4

HCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 1151755-(Tetradecyloxy)-2-furoic acidHCID 107741414-(Bromomethyl)-5-methyl-1,3-dioxol-2-one

生成物 1

HCID 49869762(5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 5-(tetradecyloxy)furan-2-carboxylate

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a stirred, room temperature solution of 5-(tetradecyloxy)furan-2-carboxylic acid (0.228 g, 0.70 mmol) in DMF (4 mL) was added potassium carbonate (0.146 g, 1.05 mmol) and 4-(bromomethyl)-5-methyl-1,3-dioxol-2-one (0.160 g, 0.84 mmol). The reaction vessel was capped and stirring was continued for 14 hrs at which time TLC ((20% EtOAc in Hexanes Rf=0.10 (SM) and 0.40 (Prod)) indicated complete consumption of the starting material. The reaction was quenched by the addition of water (5 mL), brine (5 mL) and EtOAc (30 mL). The biphasic mixture was transferred to a separatory funnel and the organic phase was extracted 3 times with brine (3×10 mL). The organic phase was dried and concentrated to give a colourless oil. The resulting crude material was purified by flash chromatography eluting with 5-20% EtOAc in hexanes to yield a colourless syrup that solidified on standing. 1H NMR (400 MHz, DMSO-d6) δ: 7.2 (d, 1H), 5.6 (d, 1H), 5.1 (s, 2H), 4.1 (t, 2H), 2.18 (s, 3H), 1.6-1.8 (m, 2H), 1.3-1.4 (m, 2H), 1.23 (d, 6H), 1.2 (s, 20H), 0.85 (t, 3H).

後処理

  1. customThe reaction vessel was capped
  2. customconsumption of the starting material
  3. customThe reaction was quenched by the addition of water (5 mL), brine (5 mL) and EtOAc (30 mL)
  4. customThe biphasic mixture was transferred to a separatory funnel
  5. extractionthe organic phase was extracted 3 times with brine (3×10 mL)
  6. customThe organic phase was dried
  7. concentrationconcentrated
  8. customto give a colourless oil
  9. customThe resulting crude material was purified by flash chromatography
  10. washeluting with 5-20% EtOAc in hexanes
  11. customto yield a colourless syrup that

出典と根拠

ORDレコード
ord-fb31725642b14a44ba03cd459d3d1788
出典データセット
uspto-grants-2014_11
特許番号
US08884034B2

関連ノート

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