Ethyl 4-bromobenzoate → 4-[(Diethoxyphosphorylmethyl)-ethoxyphosphinoyl]-benzoic acid ethyl ester

HRID 50630

反応式

HRID 50630 の反応式
[CH2:1]([O:3][C:4](=[O:12])[C:5]1[CH:10]=[CH:9][C:8](Br)=[CH:7][CH:6]=1)[CH3:2].[CH2:13]([O:15][P:16]([CH2:21][PH:22]([O:24][CH2:25][CH3:26])=[O:23])(=[O:20])[O:17][CH2:18][CH3:19])[CH3:14]>C(#N)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CN1CCOCC1>[CH2:1]([O:3][C:4](=[O:12])[C:5]1[CH:10]=[CH:9][C:8]([P:22]([CH2:21][P:16]([O:15][CH2:13][CH3:14])([O:17][CH2:18][CH3:19])=[O:20])([O:24][CH2:25][CH3:26])=[O:23])=[CH:7][CH:6]=1)[CH3:2]

参加物

6

反応物 2

HCID 22043Ethyl 4-bromobenzoateHCID 178476825HCID 178476825、化合物

生成物 1

HCID 213024024-[(Diethoxyphosphorylmethyl)-ethoxyphosphinoyl]-benzoic acid ethyl ester収率 58.6%

試薬・触媒・溶媒 3

HCID 79724-Methylmorpholine触媒HCID 178418397HCID 178418397、化合物触媒HCID 6342Acetonitrile溶媒

実験手順

A sealed pressure flask, flushed with N2, containing a mixture of 4-bromo-benzoic acid ethyl ester (3a) (5 g, 0.0218 mol), ethoxyphosphinoylmethyl-phosphonic acid diethyl ester (3b), (5.86 g, 0.024 mol), NMM (2.88 mL, 0.0262 mmol) and Pd(PPh3)4 (2.017 g, 0.00175 mol) in acetonitrile (20 mL) was stirred at ambient temperature for 5-10 min, then heated at 90° C. for 18 hours. The reaction mixture was filtered through celite, and the celite was washed with EtOAc (3×30 mL) until the filtrate showed little or no evidence of product by HPLC. The combined organics were dried over Na2SO4 and concentrated on rotary evaporator. The desired product (ix) was purified by silica gel flash chromatography to give a pale yellow oil (5.01 g). 1H NMR (300 MHz, CDCl3) δ (ppm)): 0.96 (t, J=7.07 Hz, 3H), 1.13 (m, 9H), 2.41 (t, J=18.2 Hz, 2H), 3.84 (m, 6H), 4.17 (q, J=7.11 Hz, 2H), 7.71 (m, 2H), 7.92 (m, 2H)., 31P NMR (121 MHz, CDCl3) δ32.8 and 19.7.

後処理

  1. customA sealed pressure flask, flushed with N2
  2. additioncontaining
  3. temperatureheated at 90° C. for 18 hours
  4. filtrationThe reaction mixture was filtered through celite
  5. washthe celite was washed with EtOAc (3×30 mL) until the filtrate
  6. dry with materialThe combined organics were dried over Na2SO4
  7. concentrationconcentrated on rotary evaporator
  8. customThe desired product (ix) was purified by silica gel flash chromatography

出典と根拠

ORDレコード
ord-a6bbe25a24454bd8bb8aad854e0bcfda
出典データセット
uspto-grants-2004_03
特許番号
US06713462B2

関連ノート

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