4-Bromophenol → HCID 67248317、化合物

HRID 709239

反応式

HRID 709239 の反応式
[O:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH:2]1[O:7][CH:8]1[CH2:11][CH:10]([CH2:12][CH2:13][OH:14])[CH2:9]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Br:34][C:35]1[CH:40]=[CH:39][C:38](O)=[CH:37][CH:36]=1.CCOC(/N=N/C(OCC)=O)=O>O1CCCC1.C(OCC)(=O)C>[Br:34][C:35]1[CH:40]=[CH:39][C:38]([O:14][CH2:13][CH2:12][CH:10]2[CH2:9][CH:8]([O:7][CH:2]3[CH2:3][CH2:4][CH2:5][CH2:6][O:1]3)[CH2:11]2)=[CH:37][CH:36]=1

参加物

7

反応物 4

HCID 78084-BromophenolHCID 11776TriphenylphosphineHCID 5462977Diethyl azodicarboxylateHCID 672483422-[3-(Tetrahydro-2H-pyran-2-yloxy)cyclobutyl]ethanol

生成物 1

HCID 67248317HCID 67248317、化合物収率 32.5%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

2-[3-(Tetrahydro-2H-pyran-2-yloxy)cyclobutyl]ethanol (1.08 g, 5.39 mmol) was dissolved in tetrahydrofuran (20 mL) and was cooled in an ice bath. Triphenylphosphine (2.12 g, 8.09 mmol) and 4-bromo-phenol (1.12 g, 6.47 mmol) were added and the reaction was stirred until dissolved. Diethylazodicaboxylate (1.45 g, 8.09 mmol) was added dropwise to the reaction and the reaction was then warmed to room temperature and stirred for 48 hours. The reaction was diluted with ethyl acetate and washed with 1 N aqueous sodium hydroxide. The organic layer was dried over magnesium sulfate, filtered and evaporated in vacuo to give a clear oil. Purification on silica gel with heptane-ethyl acetate (15% ethyl acetate) gave 2-({3-[2-(4-bromophenoxy)ethyl]cyclobutyl}oxy)tetrahydro-2H-pyran (622 mg, 32.4%) as a clear oil. Partial 1H NMR indicated a ˜4:1 mix of unknown cis-trans isomers. (CDCl3, δ ppm, key peaks are 4.08 (m, 0.80H), 4.38 (m, 0.20H), 6.74 (d, J=8.98, 2H), 7.34 (d, J=9.18, 2H).

後処理

  1. temperaturewas cooled in an ice bath
  2. dissolutionuntil dissolved
  3. stirringstirred for 48 hours
  4. washwashed with 1 N aqueous sodium hydroxide
  5. dry with materialThe organic layer was dried over magnesium sulfate
  6. filtrationfiltered
  7. customevaporated in vacuo
  8. customto give a clear oil
  9. customPurification on silica gel with heptane-ethyl acetate (15% ethyl acetate)

出典と根拠

ORDレコード
ord-a810019da01f42119661dc24a8162dc3
出典データセット
uspto-grants-2015_11
特許番号
US09180123B2

関連ノート

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