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Ethyl Acetate → Benzyl 3-(2-propionyloxy-5-(ethoxy(diethylphosphonomethyl)phosphinoyl)phenyl)-3-methylbutanoate

HRID 39278
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 39278
[C:1](Cl)(=[O:4])[CH2:2][CH3:3].[OH:6][C:7]1[CH:12]=[CH:11][C:10]([P:13]([O:24][CH2:25][CH3:26])([CH2:15][P:16]([O:21][CH2:22][CH3:23])([O:18][CH2:19][CH3:20])=[O:17])=[O:14])=[CH:9][C:8]=1[C:27]([CH3:40])([CH3:39])[CH2:28][C:29]([O:31][CH2:32][C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)=[O:30].C(OCC)(=O)C>CN(C1C=CN=CC=1)C.N1C=CC=CC=1>[C:1]([O:6][C:7]1[CH:12]=[CH:11][C:10]([P:13]([O:24][CH2:25][CH3:26])([CH2:15][P:16]([O:21][CH2:22][CH3:23])([O:18][CH2:19][CH3:20])=[O:17])=[O:14])=[CH:9][C:8]=1[C:27]([CH3:40])([CH3:39])[CH2:28][C:29]([O:31][CH2:32][C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1)=[O:30])(=[O:4])[CH2:2][CH3:3]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 3

HCID 8857Ethyl AcetateHCID 62324Propionyl chlorideHCID 25139361Benzyl 3-(2-hydroxy-5-(Ethoxy(diethylphosphonomethyl)phosphinoyl)phenyl)-3-methylbutanoate

Produkt 1

HCID 86655577Benzyl 3-(2-propionyloxy-5-(ethoxy(diethylphosphonomethyl)phosphinoyl)phenyl)-3-methylbutanoateAusbeute 66,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 14284
4-(Dimethylamino)pyridine
Katalysator
HCID 1049PyridineLösungsmittel

Versuchsvorschrift

Proprionyl chloride (190 μL, 2.17 mmol) was added drop-wise to a stirring solution of crude phenol 122 (880 mg, 1.67 mmol) and DMAP (2 mg, 0.016 mmol) in pyridine (5 mL). The reaction was continued for 3 hr at room temperature followed by the addition of ethyl acetate (100 mL). The organic layer was washed with cold aqueous HCl (0.5 N), H2O and saturated aqueous NaCl then dried over Na2SO4 and concentrated in vacuo. The crude product was purified by silica gel chromatography (0 to 20% methanol in ethyl acetate) using a Biotage Horizons™ system, resulting in 123 as a pale yellow liquid (644 mg, 66%): 1H NMR (400 MHz, CDCl3) δ 1.25 (t, J=7.0, 3H), 1.26 (t, J=7.5, 3H), 1.30 (t, J=7.0, 3H), 1.46 (s, 3H), 1.48 (s, 3H), 2.50-2.63 (m, 4H), 2.82 (AB q, J=14.4, 2H), 3.93-4.16 (m, 6H), 4.93 (s, 2H), 7.12-7.18 (m, 3H), 7.26-7.32 (m, 3H), 7.70 (ddd, J=1.8, 8.4, 11.6, 1H), 7.86 (dd, J=1.8, 13.4, 1H): 31P (162 MHz, CDCl3) δ 20.21 (d, J=9.7, 1 P), 34.03 (d, J=9.7, 1 P).

Aufarbeitung

  1. washThe organic layer was washed with cold aqueous HCl (0.5 N), H2O and saturated aqueous NaCl
  2. dry with materialthen dried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customThe crude product was purified by silica gel chromatography (0 to 20% methanol in ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-59f6858b49044c839b8d0114e1657121
Quelldatensatz
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08524691B2

Notizen zur Reaktion

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