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

HRID 470525Notes

Reaction equation

HRID 470525 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.I[C:37]1[CH:42]=[CH:41][NH:40][C:39](=[O:43])[CH:38]=1.C([O-])([O-])=O.[Cs+].[Cs+].C(Cl)Cl>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[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:14]=[CH:15][C:16]([C:37]3[CH:42]=[CH:41][NH:40][C:39](=[O:43])[CH:38]=3)=[CH:17][CH:18]=2)[CH3:12])[CH2:6][CH2:5]1

Participants

7

Reactant 4

HCID 6344DichloromethaneHCID 10796Cesium carbonateHCID 205825354-Iodo-1,2-dihydropyridin-2-oneHCID 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-one

Product 1

HCID 59635695(S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-oneYield 71%

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of (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 (2.646 g, 5.52 mmol) in 1,4-dioxane (60 mL) were added 4-iodopyridin-2(1H)-one (1.200 g, 5.43 mmol), 2 M Cs2CO3 (14.5 mL), and PdCl2(dppf).CH2Cl2 (0.230 g, 0.28 mmol). The mixture was degassed and heated, under a nitrogen atmosphere, at 120° C. for 15 h. The mixture was diluted with CH2Cl2, dried over Na2SO4. After the solvents were evaporated, the residue was purified by chromatography on silica gel eluted with MeOH/CH2Cl2 to afford 1.717 g (71%) of (S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-(4-(2-oxo-1,2-dihydropyridin-4-yl)phenyl)ethyl)-6-phenyl-1,3-oxazinan-2-one. LC-MS Method 1 tR=1.23 min, m/z 389, 447 (MH+); 1H NMR (400 MHz, CD3OD) δ 7.40 (d, J=6.7 Hz, 1H), 7.31 (d, J=8.2 Hz, 2H), 7.29-7.20 (m, 5H), 6.96 (d, J=8.2 Hz, 2H), 6.57-6.52 (m, 2H), 5.49 (q, J=7.0 Hz, 1H), 2.98-2.93 (m, 1H), 2.47-2.34 (m, 2H), 2.16-2.09 (m, 1H), 2.07 (s, 2H), 1.45 (d, J=7.0 Hz, 3H), 1.19 (s, 3H), 0.87 (s, 3H).

Workup

  1. customThe mixture was degassed
  2. additionThe mixture was diluted with CH2Cl2
  3. dry with materialdried over Na2SO4
  4. customAfter the solvents were evaporated
  5. customthe residue was purified by chromatography on silica gel
  6. washeluted with MeOH/CH2Cl2

Sources & evidence

ORD record
ord-7f7b42ae542749eba797840bbdd47083
Source dataset
uspto-grants-2014_01
Patent number
US08629138B2

Reaction notes

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