Cesium carbonate → (R)-6-(3-hydroxypropyl)-3-((S)-1-(4-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one

HRID 2037718Notes

Reaction equation

HRID 2037718 reaction equation
[OH:1][CH2:2][CH2:3][CH2:4][C@@:5]1([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)[O:10][C:9](=[O:11])[N:8]([C@H:12]([C:14]2[CH:19]=[CH:18][C:17](B3OC(C)(C)C(C)(C)O3)=[CH:16][CH:15]=2)[CH3:13])[CH2:7][CH2:6]1.Br[C:36]1[CH:41]=[CH:40][N:39]([CH3:42])[C:38](=[O:43])[CH:37]=1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[OH:1][CH2:2][CH2:3][CH2:4][C@@:5]1([C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=2)[O:10][C:9](=[O:11])[N:8]([C@H:12]([C:14]2[CH:19]=[CH:18][C:17]([C:36]3[CH:41]=[CH:40][N:39]([CH3:42])[C:38](=[O:43])[CH:37]=3)=[CH:16][CH:15]=2)[CH3:13])[CH2:7][CH2:6]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 221323964-Bromo-1-methylpyridin-2(1H)-oneHCID 59635633(R)-6-(3-hydroxypropyl)-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one

Product 1

HCID 59635743(R)-6-(3-hydroxypropyl)-3-((S)-1-(4-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-oneYield 51%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of (R)-6-(3-hydroxypropyl)-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one (50 mg, 0.11 mmol) and 4-bromo-1-methylpyridin-2(1H)-one (30 mg, 0.16 mmol), Pd(Ph3P)2Cl2 (10 mg), and aq. Cs2CO3 solution (4 mL, 2 M) in 1,4-dioxane (10 mL) was stirred and heated to reflux for 2 h. When the reaction was over, the mixture was washed with water and extracted with EtOAc. The organic phase was washed with brine, dried over Na2SO4, filtered and concentrated to give the crude product, which was purified by preparative TLC to give (R)-6-(3-hydroxypropyl)-3-((S)-1-(4-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one (25 mg, 51%). 1H NMR (CDCl3): δ=1.35 (m, 1H), 1.47 (d, 3H), 1.63 (m, 2H), 1.94 (m, 2H), 2.18 (m, 1H), 2.39 (m, 2H), 2.86 (m, 1H), 3.51 (m, 5H), 5.63 (m, 1H), 6.31 (m, 1H), 6.70 (m, 1H), 6.91 (m, 2H), 7.20-7.32 (m, 8H).

Workup

  1. temperatureheated
  2. temperatureto reflux for 2 h
  3. washwas washed with water
  4. extractionextracted with EtOAc
  5. washThe organic phase was washed with brine
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customto give the crude product, which
  10. customwas purified by preparative TLC

Sources & evidence

ORD record
ord-ce1e9fd974b44bb4a0bb4ea019f09c1b
Source dataset
uspto-grants-2013_11
Patent number
US08575156B2

Reaction notes

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