2,4-Difluorophenylboronic acid → HCID 59532356, compound

HRID 450981Notes

Reaction equation

HRID 450981 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([N:11]2[CH2:16][CH2:15][C@@:14]([C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=3)([CH2:17][CH2:18][OH:19])[O:13][C:12]2=[O:27])[CH2:9][CH3:10])=[CH:4][CH:3]=1.[F:28][C:29]1[CH:34]=[C:33]([F:35])[CH:32]=[CH:31][C:30]=1B(O)O>O1CCOCC1.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>[F:28][C:29]1[CH:34]=[C:33]([F:35])[CH:32]=[CH:31][C:30]=1[C:2]1[CH:3]=[CH:4][C:5]([C@@H:8]([N:11]2[CH2:16][CH2:15][C@@:14]([C:20]3[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=3)([CH2:17][CH2:18][OH:19])[O:13][C:12]2=[O:27])[CH2:9][CH3:10])=[CH:6][CH:7]=1

Participants

5

Reactant 2

HCID 27343342,4-Difluorophenylboronic acidHCID 59532383HCID 59532383, compound

Product 1

HCID 59532356HCID 59532356, compoundYield 26%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

To a solution of (S)-3-((S)-1-(4-bromophenyl)propyl)-6-(4-fluorophenyl)-6-(2-hydroxy ethyl)-1,3-oxazinan-2-one (60 mg, 0.14 mmol), 2,4-difluorophenylboronic acid (26 mg, 0.17 mmol) and Pd(PPh3)4 (16 mg, 0.01 mmol) in dioxane (5 mL) was added a solution of CsCO3 (2 M, 1 mL) at 0° C. Then the reaction mixture was refluxed overnight under nitrogen. The reaction mixture was washed with water and then extract with CH2Cl2 twice. The combined organic phases were dried over Na2SO4, filtered and concentrated to give the residue, which was purified by preparative HPLC to afford (S)-3-((S)-1-(2′,4′-difluorobiphenyl-4-yl) propyl)-6-(4-fluorophenyl)-6-(2-hydroxyethyl)-1,3-oxazinan-2-one (17 mg, 26%). 1H NMR (CD3OD): 0.96 (m, 3H), 2.01 (m, 2H), 2.12 (m, 2H), 2.30 (m, 2H), 2.48 (m, 1H), 3.10 (m, 1H), 3.33 (m, 1H), 3.65 (m, 1H), 5.38 (m, 1H), 7.02 (m, 4H), 7.08 (m, 2H), 7.28 (m, 4H), 7.42 (m, 1H). 443-114-3.

Workup

  1. temperatureThen the reaction mixture was refluxed overnight under nitrogen
  2. washThe reaction mixture was washed with water
  3. extractionextract with CH2Cl2 twice
  4. dry with materialThe combined organic phases were dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customto give the residue, which
  8. customwas purified by preparative HPLC

Sources & evidence

ORD record
ord-50fb02a8a780471bb6b4d64413526cc4
Source dataset
uspto-grants-2013_07
Patent number
US08487094B2

Reaction notes

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