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

HRID 1187806Notes

Reaction equation

HRID 1187806 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.Br[C:37]1[CH:38]=[CH:39][C:40](=[O:46])[N:41]([CH:43]([F:45])[F:44])[CH:42]=1.C([O-])([O-])=O.[Cs+].[Cs+].O>O1CCOCC1>[F:44][CH:43]([F:45])[N:41]1[C:40](=[O:46])[CH:39]=[CH:38][C:37]([C:16]2[CH:15]=[CH:14][C:13]([C@@H:11]([N:7]3[CH2:6][CH2:5][C@:4]([CH2:3][C:2]([OH:1])([CH3:34])[CH3:35])([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=4)[O:9][C:8]3=[O:10])[CH3:12])=[CH:18][CH:17]=2)=[CH:42]1

Participants

6

Reactant 4

HCID 962WaterHCID 10796Cesium carbonateHCID 231159945-Bromo-1-(difluoromethyl)-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 44476892(S)-3-((S)-1-(4-(1-(difluoromethyl)-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-1,3-oxazinan-2-oneYield 57%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A microwave vial equipped with a flea stirbar was charged with (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 (20 mg, 0.047 mmol), 5-bromo-1-(difluoromethyl)pyridin-2(1H)-one (25 mg, 0.113 mmol), Cs2CO3 (27 mg, 0.083 mmol), H2O (0.1 mL) and dry dioxane (1 mL). The mixture was sparged with N2 for 10 min and heated at 110° C. in the microwave for 0.5 h. The mixture was diluted with glacial HOAc (0.1 mL) and MeOH (0.5 mL) and filtered. The filtrate was directly purified by prep HPLC to afford (S)-3-((S)-1-(4-(1-(difluoromethyl)-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-1,3-oxazinan-2-one (11.8 mg, 57%) as an oil. LC-MS Method 1 tR=1.55 min, m/z=497, 248; 1H NMR (CDCl3) 1.13 (s, 3H), 1.19 (s, 3H), 1.56 (d, 3H), 2.15-2.35 (s, 4H), 2.42 (m, 2H), 2.88 (m, 1H), 5.71 (q, 1H), 6.64 (d, 1H), 7.04 (d, 2H), 7.18 (d, 2H), 7.30-7.40 (5H), 7.52 (1H), 7.60 (m, 1H), 7.75 (t, 1H).

Workup

  1. customA microwave vial equipped with a flea stirbar
  2. customThe mixture was sparged with N2 for 10 min
  3. additionThe mixture was diluted with glacial HOAc (0.1 mL) and MeOH (0.5 mL)
  4. filtrationfiltered
  5. customThe filtrate was directly purified by prep HPLC

Sources & evidence

ORD record
ord-8c5ef28b201c4bd7963f624c409447d7
Source dataset
uspto-grants-2014_03
Patent number
US08673899B2

Reaction notes

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