Cesium carbonate → (4S,5R)-4-Fluoromethyl-5-{4-[6-(isopropyl amino-methyl)-pyridin-3-yl]-phenyl}-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

HRID 525552Notes

Reaction equation

HRID 525552 reaction equation
[C:1]([O:5][C:6]([N:8]1[C@H:12]([CH2:13][F:14])[C@@H:11]([C:15]2[CH:20]=[CH:19][C:18](B3OC(C)(C)C(C)(C)O3)=[CH:17][CH:16]=2)[O:10][C:9]1([CH3:31])[CH3:30])=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:32]([O-])([O-])=O.[Cs+].[Cs+].Br[C:39]1[CH:40]=[CH:41][C:42]([CH2:45][NH:46]C(C)C)=[N:43][CH:44]=1.[CH2:50]([CH2:53]OC)OC.O>O.C(OCC)(=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>[C:1]([O:5][C:6]([N:8]1[C@H:12]([CH2:13][F:14])[C@@H:11]([C:15]2[CH:16]=[CH:17][C:18]([C:39]3[CH:44]=[N:43][C:42]([CH:45]([CH:50]([CH3:53])[CH3:32])[NH2:46])=[CH:41][CH:40]=3)=[CH:19][CH:20]=2)[O:10][C:9]1([CH3:31])[CH3:30])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 18180031Water 1,2-dimethoxyethaneHCID 58631114(4S,5R)-Rel-tert-butyl4-(fluoromethyl)-2,2-dimethyl-5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)oxazolidine-3-carboxylateHCID 62959892[(5-Bromopyridin-2-yl)methyl](propan-2-yl)amine

Product 1

HCID 86695440(4S,5R)-4-Fluoromethyl-5-{4-[6-(isopropyl amino-methyl)-pyridin-3-yl]-phenyl}-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of (4S,5R)-4-Fluoromethyl-2,2-dimethyl-5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-oxazolidine-3-carboxylic acid tert-butyl ester (270 mg, 0.620 mmol) in dimethoxyethane:water (8:2, 3.6 mL) is added Cs2CO3 (504 mg, 1.55 mmol) and (5-Bromo-pyridin-2-ylmethyl)-isopropyl-amine (156 mg, 0.682 mmol) at room temperature. Reaction mixture is degassed with nitrogen for 30 minutes then Pd(PPh3)4 (71 mg, 0.062 mmol) is added. The resulting reaction mixture is heated to 90° C. for 4 hours. The reaction mixture is diluted with water and ethyl acetate. The organic layer is separated, dried over sodium sulphate and solvent is evaporated in vacuo. The crude is purified by column chromatography eluting in 5% methanol in CH2Cl2 to afford the title compound (100 mg). LC-MS (m/z): [M+H]=458.2.

Workup

  1. customReaction mixture
  2. customis degassed with nitrogen for 30 minutes
  3. customThe resulting reaction mixture
  4. customThe organic layer is separated
  5. dry with materialdried over sodium sulphate and solvent
  6. customis evaporated in vacuo
  7. customThe crude is purified by column chromatography
  8. washeluting in 5% methanol in CH2Cl2

Sources & evidence

ORD record
ord-3b08b495f805467dad66c6d19eb891bd
Source dataset
uspto-grants-2016_05
Patent number
US09340564B2

Reaction notes

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