Ethyl chloroformate → Biphenyl-2,2'-diyl diethyl dicarbonate

HRID 471359

反応式

HRID 471359 の反応式
[C:1]1([C:8]2[C:9]([OH:14])=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:2]([OH:7])=[CH:3][CH:4]=[CH:5][CH:6]=1.Cl[C:16]([O:18][CH2:19][CH3:20])=[O:17]>N1C=CC=CC=1>[C:16](=[O:17])([O:18][CH2:19][CH3:20])[O:14][C:9]1[CH:10]=[CH:11][CH:12]=[CH:13][C:8]=1[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[O:7][C:16](=[O:17])[O:18][CH2:19][CH3:20]

参加物

4

反応物 2

HCID 10928Ethyl chloroformateHCID 15731(1,1'-Biphenyl)-2,2'-diol

生成物 1

HCID 58288702Biphenyl-2,2'-diyl diethyl dicarbonate

試薬・触媒・溶媒 1

HCID 1049Pyridine溶媒

実験手順

To a round-bottom flask is charged biphenyl-2,2′-diol (7.45 g, 40 mmol) and pyridine (50 mL). The flask is immersed in an ice-water bath and ethyl chloroformate (9.48 mL, 100 mmol) is added dropwise. After gradually warming to room temperature, the mixture is stirred overnight. The volatiles are removed in vacuo, and the residue is suspended in 100 mL of ethyl acetate. After filtration, the filtrate is concentrated and purified by flash chromatography. The product is obtained as a colorless oil. Yield: 5.0 g; 1H NMR (500 MHz, CDCl3, ppm) δ 7.23-7.44 (m, 8H), 4.13 (q, 4H), 1.19 (t, 6H).

後処理

  1. customThe flask is immersed in an ice-water bath
  2. customThe volatiles are removed in vacuo
  3. filtrationAfter filtration
  4. concentrationthe filtrate is concentrated
  5. custompurified by flash chromatography
  6. customThe product is obtained as a colorless oil

出典と根拠

ORDレコード
ord-2b56f5493d7444798e5c727b7761c58b
出典データセット
uspto-grants-2014_01
特許番号
US08633126B2

関連ノート

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