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

HRID 406664Notes

Reaction equation

HRID 406664 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:37]=[CH:38][C:39](=[O:43])[N:40]([CH3:42])[CH:41]=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:37]=[CH:38][C:39](=[O:43])[N:40]([CH3:42])[CH:41]=3)=[CH:16][CH:15]=2)[CH3:13])[CH2:7][CH2:6]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 130240275-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 59635752(R)-6-(3-hydroxypropyl)-3-((S)-1-(4-(1-methyl-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-oneYield 37.2%

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 (1.7 g, 3.7 mmol) and 5-bromo-1-methylpyridin-2(1H)-one (816 mg, 4.4 mmol), Pd(Ph3P)2Cl2 (200 mg), and aq Cs2CO3 solution (4 mL, 2M) in 1,4-dioxane (30 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, and the organic phase was washed with brine, dried over Na2SO4, filtered and concentrated to give crude product, which was purified by preparative TLC to give (R)-6-(3-hydroxypropyl)-3-((S)-1-(4-(1-methyl-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one (614 mg, 37%). LC-MS Method 2 tR=1.075 min, m/z=447.1; 1H NMR (CDCl3): δ=1.38 (m, 1H),1.47 (d, 3H), 1.73 (m, 2H), 1.98 (m, 2H), 2.20 (m, 1H), 2.31 (m, 2H), 2.94 (m, 1H), 3.51 (m, 2H), 3.56 (s, 3H), 5.63 (m, 1H), 6.67 (m, 1H), 6.87 (m, 2H), 7.05 (m, 2H), 7.31-7.41 (m, 6H), 7.48 (m, 1H).

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 crude product, which
  10. customwas purified by preparative TLC

Sources & evidence

ORD record
ord-48fd4309a89f4b7c8d0e67222b9ac687
Source dataset
uspto-grants-2014_06
Patent number
US08754076B2

Reaction notes

Loading…