Sodium Hydroxide → 1-(3-Fluorophenyl)-3,4-dihydroisoquinoline

HRID 1162975

Reaktionsgleichung

Reaktionsgleichung von HRID 1162975
[C:1]1([CH2:7][CH2:8][NH:9][C:10](=O)[C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([F:17])[CH:12]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O.P(Cl)(Cl)(Cl)=O.[OH-].[Na+]>C1(C)C(C)=CC=CC=1>[F:17][C:13]1[CH:12]=[C:11]([C:10]2[C:6]3[C:1](=[CH:2][CH:3]=[CH:4][CH:5]=3)[CH2:7][CH2:8][N:9]=2)[CH:16]=[CH:15][CH:14]=1

Komponenten

6

Edukt 4

HCID 14798Sodium HydroxideHCID 14812Phosphorus oxide (P4O10)HCID 24813Phosphorus oxychlorideHCID 7627373-fluoro-N-(2-phenylethyl)benzamide

Produkt 1

HCID 149989031-(3-Fluorophenyl)-3,4-dihydroisoquinoline

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7237O-XyleneLösungsmittel

Versuchsvorschrift

289.0 g (1.19 mol) of N-phenylethyl-3-fluorobenzamide were dissolved in 1000 ml of xylene and admixed at 90° C. in portions with 202.7 g (1.43 mol, 1.2 eq.) of phosphorus pentoxide. Subsequently, 326.8 ml (3.57 mol, 3.0 eq.) of phosphorus oxychloride were added dropwise. The mixture was heated under reflux for 4 h. The reaction solution was subsequently poured while hot onto ice and adjusted cautiously to pH=12 with solid NaOH with ice cooling. The precipitate was extracted three times with 500 ml of toluene, dried over MgSO4 and concentrated under reduced pressure to a highly viscous oil which later crystallizes. 267.41 g are obtained with a purity of approx. 99%, corresponding to 99.8% of theory.

Aufarbeitung

  1. temperatureThe mixture was heated
  2. temperatureunder reflux for 4 h
  3. additionThe reaction solution was subsequently poured while hot onto ice
  4. extractionThe precipitate was extracted three times with 500 ml of toluene
  5. dry with materialdried over MgSO4
  6. concentrationconcentrated under reduced pressure to a highly viscous oil which
  7. customlater crystallizes
  8. custom267.41 g are obtained with a purity of approx. 99%, corresponding to 99.8% of theory

Quellen und Nachweise

ORD-Eintrag
ord-93229bb0e6724748bb7712ba5b16a839
Quelldatensatz
uspto-grants-2010_10
Patentnummer
US07820822B2

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