Sodium hydride → 3-(3-Bromobenzyl)-6-methyl-6-phenyl-1,3-oxazinan-2-one

HRID 2037415Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2037415
[CH3:1][C:2]1([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[O:7][C:6](=[O:8])[NH:5][CH2:4][CH2:3]1.[H-].[Na+].[Br:17][C:18]1[CH:19]=[C:20]([CH:23]=[CH:24][CH:25]=1)[CH2:21]Br>C1COCC1>[Br:17][C:18]1[CH:19]=[C:20]([CH:23]=[CH:24][CH:25]=1)[CH2:21][N:5]1[CH2:4][CH2:3][C:2]([CH3:1])([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[O:7][C:6]1=[O:8]

Komponenten

5

Edukt 3

HCID 24758Sodium hydrideHCID 699793-Bromobenzyl bromideHCID 534742826-Methyl-6-phenyl-1,3-oxazinan-2-one

Produkt 1

HCID 251824193-(3-Bromobenzyl)-6-methyl-6-phenyl-1,3-oxazinan-2-oneAusbeute 32 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

A solution of 6-methyl-6-phenyl-1,3-oxazinan-2-one (500 mg, 2.62 mmol) and NaH (189 mg, 7.86 mmol) in dry THF (10 mL) was stirred for 1 h. A solution of m-bromobenzyl bromide (1.31 g, 5.24 mmol) in dry THF (3 mL) was added. The mixture was stirred overnight at rt. The reaction mixture was quenched water and extracted with EtOAc. The organic layer was washed with brine, dried over Na2SO4, concentrated and purified by preparative TLC to afford 3-(3-bromobenzyl)-6-methyl-6-phenyl-1,3-oxazinan-2-one (300 mg, 32%). 1H NMR (CDCl3): 1.60-1.70 (s, 3H), 2.15-2.30 (m, 1H), 2.35-2.48 (m, 1H), 2.79-2.90 (m, 1H), 3.00-3.10 (m, 1H), 4.30-4.40 (m, 1H), 4.50-4.60 (m, 1H), 6.90-7.00 (m, 1H), 7.00-7.10 (m, 1H), 7.20-7.45 (m, 7H).

Aufarbeitung

  1. customThe reaction mixture was quenched water
  2. extractionextracted with EtOAc
  3. washThe organic layer was washed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated
  6. custompurified by preparative TLC

Quellen und Nachweise

ORD-Eintrag
ord-c4c12095ae4d47a99d1836af690e964f
Quelldatensatz
uspto-grants-2013_11
Patentnummer
US08575156B2

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