4-Iodo-1-methylpyridin-2(1H)-one → 6-Phenyl-1,3-oxazinan-2-one

HRID 1640750Notes

Reaction equation

HRID 1640750 reaction equation
OC(C)(CO)C[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](C2C=CC(B3OC(C)(C)C(C)(C)O3)=CC=2)C)[CH2:6][CH2:5]1.IC1C=CN(C)C(=O)C=1>C([O-])([O-])=O.[Cs+].[Cs+].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>[C:28]1([CH:4]2[O:9][C:8](=[O:10])[NH:7][CH2:6][CH2:5]2)[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=1

Participants

5

Reactant 2

HCID 534080094-Iodo-1-methylpyridin-2(1H)-oneHCID 59635790(S)-6-(2,3-dihydroxy-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

Product 1

HCID 2410056-Phenyl-1,3-oxazinan-2-one

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 10796Cesium carbonateSolvent

Procedure

A mixture of (S)-6-(2,3-dihydroxy-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 (105 mg, 211.9 mmol), 4-iodo-1-methylpyridin-2(1H)-one (65 mg, 275.5 mmol), Pd(PPh3)2Cl2 (20 mg) in aq. Cs2CO3 solution (3 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 layer was dried over Na2SO4 and concentrated to give the crude product, which was purified by preparative HPLC to afford two isomers of (6S)-6-(2,3-dihydroxy-2-methylpropyl)-3-(S)-1-(4-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one

Workup

  1. temperatureat reflux for 2 h
  2. washthe mixture was washed with water
  3. extractionextracted with EtOAc
  4. dry with materialThe organic layer was dried over Na2SO4
  5. concentrationconcentrated
  6. customto give the crude product, which
  7. customwas purified by preparative HPLC

Sources & evidence

ORD record
ord-b266a532453147f795e07d8313781f77
Source dataset
uspto-grants-2012_02
Patent number
US08114868B2

Reaction notes

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