Sodium Bicarbonate → (S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-{4-[1-(oxetan-3-yl)-2-oxo-1,2-dihydropyridin-4-yl]phenyl}ethyl)-6-phenyl-1,3-oxazinan-2-one

HRID 1426031Notes

Reaction equation

HRID 1426031 reaction equation
Br[C:2]1[CH:7]=[CH:6][N:5]([CH:8]2[CH2:11][O:10][CH2:9]2)[C:4](=[O:12])[CH:3]=1.[OH:13][C:14]([CH3:47])([CH3:46])[CH2:15][C@@:16]1([C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[O:21][C:20](=[O:22])[N:19]([C@H:23]([C:25]2[CH:30]=[CH:29][C:28](B3OC(C)(C)C(C)(C)O3)=[CH:27][CH:26]=2)[CH3:24])[CH2:18][CH2:17]1.C([O-])(O)=O.[Na+]>COCCOC.C(O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[OH:13][C:14]([CH3:46])([CH3:47])[CH2:15][C@@:16]1([C:40]2[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=2)[O:21][C:20](=[O:22])[N:19]([C@H:23]([C:25]2[CH:26]=[CH:27][C:28]([C:2]3[CH:7]=[CH:6][N:5]([CH:8]4[CH2:11][O:10][CH2:9]4)[C:4](=[O:12])[CH:3]=3)=[CH:29][CH:30]=2)[CH3:24])[CH2:18][CH2:17]1

Participants

7

Reactant 3

HCID 516892Sodium BicarbonateHCID 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 70652019HCID 70652019, compound

Product 1

HCID 54771311(S)-6-(2-hydroxy-2-methylpropyl)-3-((S)-1-{4-[1-(oxetan-3-yl)-2-oxo-1,2-dihydropyridin-4-yl]phenyl}ethyl)-6-phenyl-1,3-oxazinan-2-one

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

Pd(PPh3)4 (10 mg) was added to a solution of 4-bromo-1-(oxetan-3-yl)pyridin-2(1H)-one (14 mg) in 1,2-dimethoxyethane (6 mL) under nitrogen. The formed mixture was stirred at room temperature for 1 h prior to the addition 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 (24 mg) in ethanol (2 mL) followed by saturated aqueous NaHCO3 solution (2 mL). The mixture was stirred at 100° C. for 2 h. After cooling to room temperature, the reaction was quenched with water and the resulting mixture was extracted with ethyl acetate (3×). The combined organic phase was concentrated and the residue was purified by preparative HPLC to give the title compound. Yield: 14 mg (55% of theory); LC (method 4): tR=0.97 min; Mass spectrum (ESI+): m/z=445 [M-Me2CO+H]+; 1H NMR (CDCl3) δ 1.09 (s, 3H), 1.12 (s, 3H), 1.45 (d, 3H), 2.10-2.30 (m, 4H), 2.35 (m, 1H), 2.72 (m, 1H), 4.70 (m, 2H), 5.09 (m, 2H), 5.63 (m, 1H), 5.71 (m, 1H), 6.43 (m, 1H), 6.61 (m, 1H), 6.98 (d, 2H), 7.28 (m, 7H), 7.61 (d, 1H).

Workup

  1. stirringThe mixture was stirred at 100° C. for 2 h
  2. temperatureAfter cooling to room temperature
  3. customthe reaction was quenched with water
  4. extractionthe resulting mixture was extracted with ethyl acetate (3×)
  5. concentrationThe combined organic phase was concentrated
  6. customthe residue was purified by preparative HPLC

Sources & evidence

ORD record
ord-507a2bf683f1473daa8948b1d2638429
Source dataset
uspto-grants-2015_01
Patent number
US08933072B2

Reaction notes

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