Cesium carbonate → (S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(1-(2-hydroxyethyl)-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one

HRID 2036406Notes

Reaction equation

HRID 2036406 reaction equation
[OH:1][C:2]([CH3:35])([CH3:34])[CH2:3][C@@:4]1([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[O:9][C:8](=[O:10])[N:7]([C@H:11]([C:13]2[CH:18]=[CH:17][C:16](B3OC(C)(C)C(C)(C)O3)=[CH:15][CH:14]=2)[CH3:12])[CH2:6][CH2:5]1.[OH:36][CH2:37][CH2:38][N:39]1[CH:44]=[CH:43][C:42](I)=[CH:41][C:40]1=[O:46].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][C:2]([CH3:34])([CH3:35])[CH2:3][C@@:4]1([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[O:9][C:8](=[O:10])[N:7]([C@H:11]([C:13]2[CH:18]=[CH:17][C:16]([C:42]3[CH:43]=[CH:44][N:39]([CH2:38][CH2:37][OH:36])[C:40](=[O:46])[CH:41]=3)=[CH:15][CH:14]=2)[CH3:12])[CH2:6][CH2:5]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 59532385(S)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-oneHCID 596357681-(2-hydroxyethyl)-4-iodopyridin-2(1H)-one

Product 1

HCID 59635667(S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(1-(2-hydroxyethyl)-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-oneYield 28%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of compounds (S)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one (72 mg 0.150 mmol), 1-(2-hydroxyethyl)-4-iodopyridin-2(1H)-one (48 mg 0.181 mmol), Pd(PPh3)2Cl2 (14 mg, 0.020 mmol), and Cs2CO3 (2 mL) in 1,4-dioxane (8 mL) was stirred at reflux for 2 h. After the reaction was finished, the mixture was washed with water, and extracted with EtOAC. The organic phase was washed with brine, dried over Na2SO4, filtered, and concentrated to get the crude product, which was purified by TLC to provide compound (S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(1-(2-hydroxyethyl)-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one (19.7 mg, 28%). LC-MS Method 2 tR=1.065 min, m/z=491.2; 1H NMR (CDCl3): δ1.10 (d, 6H), 1.50 (d, 3H), 2.20 (m, 5H), 2.35 (m, 1H), 3.50 (m, 1H), 3.90 (m, 2H), 4.10 (m, 2H), 5.60 (m, 1H), 6.40 (m, 1H), 6.70 (s, 1H), 6.95 (d, 2H), 7.35 (m, 8H).

Workup

  1. temperatureat reflux for 2 h
  2. washthe mixture was washed with water
  3. extractionextracted with EtOAC
  4. washThe organic phase was washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto get the crude product, which
  9. customwas purified by TLC

Sources & evidence

ORD record
ord-1cf9234485914d43bde76f9848acfdc1
Source dataset
uspto-grants-2013_11
Patent number
US08575157B2

Reaction notes

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