Ethanol → N-(3,4-Dimethyl-5-isoxazolyl)-N-[(2-methoxyethoxy)methyl]-4'-(2-oxazolyl)-2'-(2-oxazolylmethyl)[1,1'-biphenyl]-2-sulfonamide

HRID 1457187Notes

Reaction equation

HRID 1457187 reaction equation
B([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[S:10]([N:13]([C:20]1[O:24][N:23]=[C:22]([CH3:25])[C:21]=1[CH3:26])[CH2:14][O:15][CH2:16][CH2:17][O:18][CH3:19])(=[O:12])=[O:11])(O)O.Br[C:28]1[CH:33]=[CH:32][C:31]([C:34]2[O:35][CH:36]=[CH:37][N:38]=2)=[CH:30][C:29]=1[CH2:39][C:40]1[O:41][CH:42]=[CH:43][N:44]=1.CCO.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.CCOC(C)=O.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>[CH3:25][C:22]1[C:21]([CH3:26])=[C:20]([N:13]([CH2:14][O:15][CH2:16][CH2:17][O:18][CH3:19])[S:10]([C:5]2[C:4]([C:28]3[CH:33]=[CH:32][C:31]([C:34]4[O:35][CH:36]=[CH:37][N:38]=4)=[CH:30][C:29]=3[CH2:39][C:40]3[O:41][CH:42]=[CH:43][N:44]=3)=[CH:9][CH:8]=[CH:7][CH:6]=2)(=[O:12])=[O:11])[O:24][N:23]=1

Participants

8

Reactant 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 107862242-borono-N-(3,4-dimethyl-5-isoxazolyl)-N-[(2-methoxyethoxy)methyl]benzenesulfonamideHCID 221036352-[4-Bromo-3-(2-oxazolylmethyl)phenyl]oxazole

Product 1

HCID 22103666N-(3,4-Dimethyl-5-isoxazolyl)-N-[(2-methoxyethoxy)methyl]-4'-(2-oxazolyl)-2'-(2-oxazolylmethyl)[1,1'-biphenyl]-2-sulfonamide

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
75 °C

Procedure

To a solution of 2-borono-N-(3,4-dimethyl-5-isoxazolyl)-N-[(2-methoxyethoxy)methyl]-benzenesulfonamide (472 mg, 1.3 mmol, prepared as described in Step (B) of Example 1), the title compound of Step (D) of this Example (250 mg, 0.82 mmol) in 8 ml of toluene and 6.4 ml of 95% EtOH under argon, tetrakis(triphenylphosphine)palladium(0) (95 mg, 0.082 mmol) was added and followed by 4.8 ml of 2M aq. sodium carbonate. The reaction mixture was heated at 75° C. for 4 hrs, cooled and diluted with 50 ml of EtOAc. The organic liquid was separated and washed with 10 ml H2O and 10 ml brine, dried and concentrated. The residue was chromatographed on silica gel using 1:2 hexane/EtOAc to afford the title compound of this step (47 mg, 10%) as a colorless gum. Rf=0.17, silica gel, 1:2 Hexane/EtOAc.

Workup

  1. temperaturecooled
  2. customThe organic liquid was separated
  3. washwashed with 10 ml H2O and 10 ml brine
  4. customdried
  5. concentrationconcentrated
  6. customThe residue was chromatographed on silica gel using 1:2 hexane/EtOAc

Sources & evidence

ORD record
ord-0b196e033b5d493bb9d59bcbe6db6779
Source dataset
uspto-grants-1998_12
Patent number
US05846990

Reaction notes

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