ホームMCPワークベンチSkills
ホームワークベンチ通知マイページ
llms.txt · MCPガイドプライバシーポリシー · 利用規約 · サポートv1.8.0
  1. ホーム
  2. /反応

Imidazole → Triphenylphosphine Oxide

HRID 533512
ノート
印刷プレビュー

反応式

HRID 533512 の反応式
[C:1]1([P:7]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.N1C=CN=C1.[I:25]I.[Br:27][C:28]1[CH:33]=[CH:32][C:31]([CH2:34][CH2:35][OH:36])=[C:30]([CH3:37])[CH:29]=1>ClCCl>[C:14]1([P:7](=[O:36])([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1.[Br:27][C:28]1[CH:33]=[CH:32][C:31]([CH2:34][CH2:35][I:25])=[C:30]([CH3:37])[CH:29]=1
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 4

HCID 795ImidazoleHCID 807IodineHCID 11776TriphenylphosphineHCID 578428522-(4-Bromo-2-methylphenyl)ethanol

生成物 2

HCID 13097Triphenylphosphine OxideHCID 665779234-Bromo-1-(2-iodo-ethyl)-2-methyl-benzene

試薬・触媒・溶媒 1

HCID 6344
Dichloromethane
溶媒

実験手順

To a 250 mL flask in an ice bath was added triphenyl phosphine (6.17 g, 22.8 mmol), imidazole (1.6 g, 22.8 mmol) and 100 mL of anhydrous dichloromethane. Once dissolved, iodine (5.79 g, 22.8 mmol) was added. The reaction was then stirred for about 30 minutes (ppt formed). The 2-(4-bromo-2-methylphenyl)ethanol (3.93 g, 18.3 mmol) was added in batches and the flask was rinsed with the remaining DCM (22 mL) which was also added to the reaction mixture. The reaction was warmed to room temperature and was stirred overnight. The reaction mixture was filtered through a small pad of celite and washed with DCM (100 mL). The filtrate was washed with saturated aqueous sodium thiosulfate (200 mL) and brine 200 mL. The organics were concentrated in vacuo to furnish a white solid (triphenyphosphine oxide+desired product). The material was triturated with heptanes for 5-10 mins then filtered to remove the majority of the triphenylphosphine oxide The filtrate was concentrated in vacuo to furnish a total of 5.86 g (98.8%) of the title compound as a clear oil that solidified upon standing. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3H) 3.04-3.20 (m, 2H) 3.21-3.39 (m, 2H) 7.02 (d, J=8.20 Hz, 1H) 7.23-7.29 (m, 1H) 7.30-7.38 (m, 1H).

後処理

  1. dissolutionOnce dissolved
  2. custom(ppt formed)
  3. washthe flask was rinsed with the remaining DCM (22 mL) which
  4. additionwas also added to the reaction mixture
  5. stirringwas stirred overnight
  6. filtrationThe reaction mixture was filtered through a small pad of celite
  7. washwashed with DCM (100 mL)
  8. washThe filtrate was washed with saturated aqueous sodium thiosulfate (200 mL) and brine 200 mL
  9. concentrationThe organics were concentrated in vacuo

出典と根拠

ORDレコード
ord-3c64bb31a0aa4df389a268d4e948e960
出典データセット
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08853258B2

反応ノート

読み込み中…

このページの内容参加物実験手順後処理出典と根拠反応ノート