Benzophenone imine → HCID 58155322, compound

HRID 1929488Notes

Reaction equation

HRID 1929488 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([F:18])=[C:6]([C@@:8]2([CH3:17])[NH:13][C:12](=[O:14])[CH2:11][O:10][C:9]2([CH3:16])[CH3:15])[CH:7]=1.[C:19](=[NH:32])([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C(Cl)(Cl)Cl.[Pd].[Pd].C(P(C(C)(C)C)C1C=CC=CC=1C1C(C(C)C)=CC(C(C)C)=CC=1C(C)C)(C)(C)C>[C:19](=[N:32][C:2]1[CH:3]=[CH:4][C:5]([F:18])=[C:6]([C@@:8]2([CH3:17])[NH:13][C:12](=[O:14])[CH2:11][O:10][C:9]2([CH3:16])[CH3:15])[CH:7]=1)([C:26]1[CH:27]=[CH:28][CH:29]=[CH:30][CH:31]=1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

Participants

6

Reactant 2

HCID 136809Benzophenone imineHCID 58155211HCID 58155211, compound

Product 1

HCID 58155322HCID 58155322, compoundYield 112.5%

Reagents, catalysts & solvents 3

HCID 11029508Palladium, tris[mu-[(1,2-eta:4,5-eta)-(1E,4E)-1,5-diphenyl-1,4-pentadien-3-one]]di-, compd. with trichloromethane (1:1)CatalystHCID 11618717Di-tert-butyl(2',4',6'-tris(propan-2-yl)-(1,1'-biphenyl)-2-yl)phosphaneCatalystHCID 1140TolueneSolvent

Conditions

Temperature
105 °C

Procedure

In a sealed tube a solution of (R)-5-(5-bromo-2-fluoro-phenyl)-5,6,6-trimethyl-morpholin-3-one (1.0 g, 3.2 mmol) in toluene (8 ml) was treated consecutively with sodium tert-butylate (912 mg, 9.5 mmol), 2-di-tert-butylphosphino-2′,4′,6′-triisopropylbiphenyl (tert-butyl-x-phos) (134 mg, 10 mol %) and tris(dibenzylideneacetone)-dipalladium chloroform complex [Pd2(dba)3.CHCl3] (98 mg, 5 mol %). Benzophenone imine (1.06 ml, 6.3 mmol) was added finally via syringe. The tube was sealed under argon and the mixture was stirred at 105° C. for 20 h. For the workup, the brown solution was extracted with ethyl acetate and water. The organic layer was separated, washed with brine, dried over sodium sulfate, filtered and evaporated at reduced pressure to give brown oil (1.5 g). The crude product was purified by chromatography on silica gel using a gradient of heptane and ethyl acetate=100/0 to 50/50 as the eluent. The (R)-5-[5-(benzhydrylidene-amino)-2-fluoro-phenyl]-5,6,6-trimethyl-morpholin-3-one was obtained as a light yellow foam (1.13 g, 86% of theory). Mass (calculated) C26H25FN2O2 [416.493]; (found) [M+H]+=417.

Workup

  1. customThe tube was sealed under argon
  2. extractionFor the workup, the brown solution was extracted with ethyl acetate and water
  3. customThe organic layer was separated
  4. washwashed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. customevaporated at reduced pressure

Sources & evidence

ORD record
ord-86f2996ce16b4797b550a69491594656
Source dataset
uspto-grants-2012_05
Patent number
US08188079B2

Reaction notes

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