Triphenylphosphine → HCID 11548218, compound

HRID 1362991Notes

Reaction equation

HRID 1362991 reaction equation
[Br:1][C:2]1[CH:6]=[N:5][N:4]([CH3:7])[C:3]=1[C:8]1[CH:9]=[C:10]([NH:15][C:16]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][CH:20]=2)=[O:17])[CH:11]=[CH:12][C:13]=1[OH:14].O[CH2:27][CH2:28][C:29]1[CH:34]=[CH:33][N:32]=[CH:31][CH:30]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>C1COCC1>[Br:1][C:2]1[CH:6]=[N:5][N:4]([CH3:7])[C:3]=1[C:8]1[CH:9]=[C:10]([NH:15][C:16]([NH:18][C:19]2[CH:20]=[CH:21][C:22]([Cl:25])=[CH:23][CH:24]=2)=[O:17])[CH:11]=[CH:12][C:13]=1[O:14][CH2:27][CH2:28][C:29]1[CH:34]=[CH:33][N:32]=[CH:31][CH:30]=1

Participants

6

Reactant 4

HCID 11776Triphenylphosphine2×HCID 729214-Pyridineethanol2×HCID 5363146Diisopropyl azodicarboxylateHCID 1355074951-(3-(4-bromo-1-methyl-1H-pyrazol-5-yl)-4-hydroxyphenyl)-3-(4-chlorophenyl)urea

Product 1

HCID 11548218HCID 11548218, compoundYield 44%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 1-[3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-4-hydroxy-phenyl]-3-(4-chloro-phenyl)-urea (0.1 g, 0.24 mmol), 4-(2-hydroxyethyl)-pyridine (0.0443 g, 0.36 mmol), and triphenylphosphine (0.0944 g, 0.36 mmol) in 10 mL of dry THF was added diisopropylazo-dicarboxylate (0.0728 g, 0.36 mmol) at ambient temperature. The mixture was stirred for 2 hours. Next, additional triphenylphosphine (0.0944 g, 0.36 mmol), 4-(2-hydroxyethyl)-pyridine (0.0443 g, 0.36 mmol), and diisopropylazodicarboxylate were added and the reaction mixture further stirred at room temperature overnight. The solvent from the reaction mixture was evaporated and the crude residue was dissolved in 5.0 mL of DMSO and purified by RP-HPLC. The proper fractions were collected and concentrated to ¼ volume. The aqueous solution was neutralized with 1N NaOH and extracted with ethyl acetate (2×, 59 mL). The organic layer was dried with sodium sulfate, filtered and evaporated to dryness to afford 1-[3-(4-Bromo-2-methyl-2H-pyrazol-3-yl)-4-(2-pyridin-4-yl-ethoxy)-phenyl]-3-(4-chloro-phenyl)-urea as a brown solid in 44% yield. LCMS m/z (%)=526 (M+H 79Br, 100), 528 (M+H 81Br, 67). 1H NMR (DMSO-d6) δ: 9.33 (bs, 1H), 9.24 (bs, 1H), 8.39 (dd, J=4.44 and 1.48 Hz, 2H), 7.63 (d, J=7.28 Hz, 1H), 7.59 (s, 1H), 7.56 (dd, J=8.94 and 2.71 Hz, 2H), 7.48 (m, 1H), 7.34 (d, J=2.67, 1H), 7.31 (d, J=2.67, 1H), 7.28 (dd, J=6.88 and 4.87 Hz, 2H), 7.14 (d, J=9.05 Hz, 1H), 7.09 (d, J=5.93 Hz, 1H), 4.01-4.2 (m, 2H), 3.48 (s, 3H), 2.96-2.91 (m, 2H).

Workup

  1. stirringthe reaction mixture further stirred at room temperature overnight
  2. customThe solvent from the reaction mixture was evaporated
  3. dissolutionthe crude residue was dissolved in 5.0 mL of DMSO
  4. custompurified by RP-HPLC
  5. customThe proper fractions were collected
  6. concentrationconcentrated
  7. extractionextracted with ethyl acetate (2×, 59 mL)
  8. dry with materialThe organic layer was dried with sodium sulfate
  9. filtrationfiltered
  10. customevaporated to dryness

Sources & evidence

ORD record
ord-ae2e2a15cfb44e3c8c0bddafaf4489b5
Source dataset
uspto-grants-2011_02
Patent number
US07884101B2

Reaction notes

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