Cesium carbonate → HCID 58109371, compound

HRID 1046199Notes

Reaction equation

HRID 1046199 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:44]=[CH:43][C:40]([C:41]#[N:42])=[CH:39][N:38]=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][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:44]=[CH:43][C:40]([C:41]#[N:42])=[CH:39][N:38]=3)=[CH:17][CH:18]=2)[CH3:12])[CH2:6][CH2:5]1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 50057186-Bromopyridine-3-carbonitrileHCID 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 58109371HCID 58109371, compoundYield 62.7%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 312751,4-DioxaneSolvent

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 (200 mg, 0.42 mmol) in 1,4-dioxane (1.5 mL) was added 6-bromonicotinonitrile (123 mg, 0.67 mmol), Pd(PPh3)2Cl2 (30 mg, 0.042 mmol), and Cs2CO3 (1 mL, 2 M) were added. The vessel was sealed with a septum and placed into the microwave cavity. Microwave irradiation of 100 W was used, and the temperature being ramped from rt to 120° C. Once this temperature was reached, the reaction mixture was held at this temperature for 30 min. After the mixture was cooled to rt, the mixture was filtered. The filtrate was extracted with EtOAc (4×20 mL). The organic layer was washed with brine, dried over Na2SO4 and concentrated to give the crude product, which was purified by preparative TLC to give 6-(4-((S)-1-((S)-6-(2-hydroxy-2-methylpropyl)-2-oxo-6-phenyl-1,3-oxazinan-3-yl)ethyl)phenyl)nicotinonitrile (120 mg, 62%). LC-MS Method 2 tR=1.33, m/z=398; 1H NMR (CDCl3): 1.13 (s, 3H), 1.19 (s, 3H), 1.58 (d, 3H), 2.22 (m, 2H), 2.27 (m, 2H), 2.40 (m, 1H), 2.89 (m, 1H), 3.49 (s, 1H), 5.73 (m, 1H), 7.11 (d, 2H), 7.28-7.38 (m, 5H), 7.80 (m, 3H), 8.00 (d, 1H), 8.93 (s, 1H).

Workup

  1. additionwere added
  2. customThe vessel was sealed with a septum
  3. customMicrowave irradiation of 100 W
  4. custombeing ramped from rt to 120° C
  5. filtrationthe mixture was filtered
  6. extractionThe filtrate was extracted with EtOAc (4×20 mL)
  7. washThe organic layer was washed with brine
  8. dry with materialdried over Na2SO4
  9. concentrationconcentrated
  10. customto give the crude product, which
  11. customwas purified by preparative TLC

Sources & evidence

ORD record
ord-1d857714754c41c8800f36f1f53626e4
Source dataset
uspto-grants-2013_10
Patent number
US08569292B2

Reaction notes

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