Propargyl alcohol → HCID 86670378, compound

HRID 1972518Notes

Reaction equation

HRID 1972518 reaction equation
Br[C:2]1[CH:3]=[C:4]([C:22]([OH:31])([C:27]([F:30])([F:29])[F:28])[C:23]([F:26])([F:25])[F:24])[CH:5]=[CH:6][C:7]=1[N:8]1[CH2:13][CH2:12][N:11]([S:14]([C:17]2[S:18][CH:19]=[CH:20][CH:21]=2)(=[O:16])=[O:15])[CH2:10][CH2:9]1.[CH2:32]([OH:35])[C:33]#[CH:34].C(NCC)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>CN(C=O)C.[Pd](Cl)Cl.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Cu](I)I>[S:18]1[CH:19]=[CH:20][CH:21]=[C:17]1[S:14]([N:11]1[CH2:12][CH2:13][N:8]([C:7]2[CH:6]=[CH:5][C:4]([C:22]([OH:31])([C:27]([F:30])([F:29])[F:28])[C:23]([F:26])([F:25])[F:24])=[CH:3][C:2]=2[C:34]#[C:33][CH2:32][OH:35])[CH2:9][CH2:10]1)(=[O:16])=[O:15]

Participants

8

Reactant 4

HCID 7859Propargyl alcoholHCID 8021DiethylamineHCID 11776TriphenylphosphineHCID 86670331HCID 86670331, compound

Product 1

HCID 86670378HCID 86670378, compoundYield 44.2%

Reagents, catalysts & solvents 3

HCID 83717Copper iodideCatalystHCID 6102075Dichlorobis(triphenylphosphine)palladiumCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
120 °C

Procedure

2-(3-Bromo-4-(4-(thiophen-2-ylsulfonyl)piperazin-1-yl)phenyl)-1,1,1,3,3,3-hexafluoro-2-propanol (117 mg, 0.21 mmol, Example 69), propargyl alcohol (25 μL, 0.42 mmol, Sigma-Aldrich, St. Louis, Mo.), diethylamine (44 μL, 0.42 mmol, Sigma-Aldrich, St. Louis, Mo.), bis(triphenylphosphine) palladium(II) dichloride (15 mg, 0.02 mmol, Strem Chemical Inc, Newburyport, Mass.), triphenylphosphine (11 mg, 0.04 mmol, Sigma-Aldrich, St. Louis, Mo.), and copper iodide (4 mg, 0.02 mmol, Strem Chemical Inc, Newburyport, Mass.) were combined in DMF (1 mL). The reaction mixture was purged with nitrogen for several minutes, and then stirred and heated in an Emrys Optimizer microwave reactor (Personal Chemistry, Biotage AB, Inc., Uppsala, Sweden) at 120° C. for 30 min. The reaction was diluted with CH2Cl2 (10 mL) and water (10 mL). The organic extracts were separated, washed with water (10 mL), dried (Na2SO4), filtered, and concentrated. Purification via column chromatography (12 g silica gel, 0 to 1% MeOH in CH2Cl2) afforded 3-(2-(4-(2-thiophenylsulfonyl)-1-piperazinyl)-5-(2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl)phenyl)-2-propyn-1-ol (49 mg) as an off-white solid. 1H NMR (400 MHz, DMSO-d6) δ 8.70 (s, 1H), 8.09 (br s, 1H), 7.45-7.75 (m, 3H), 7.33 (br s, 1H), 7.09 (d, J=7.63 Hz, 1H), 5.29 (br s, 1H), 4.27 (br s, 2H), 3.24-3.36 (m, 4H), 3.07-3.17 (m, 4H); m/z (ESI, +ve ion) 529.1 (M+H)+. GK-GKRP IC50 (Binding)=0.712 μM. GK-GKRP EC50 (LC MS/MS-2)=0.557 μM.

Workup

  1. customThe reaction mixture was purged with nitrogen for several minutes
  2. additionThe reaction was diluted with CH2Cl2 (10 mL) and water (10 mL)
  3. customThe organic extracts were separated
  4. washwashed with water (10 mL)
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customPurification via column chromatography (12 g silica gel, 0 to 1% MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-6cdaddac16164f5d8f0a09563a991ffe
Source dataset
uspto-grants-2013_04
Patent number
US08431563B2

Reaction notes

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