Phenylboronic Acid → HCID 57442335, compound

HRID 2262713Notes

Reaction equation

HRID 2262713 reaction equation
Cl[C:2]1[N:3]=[N:4][C:5]([N:8]2[CH2:13][CH2:12][N:11]([CH2:14][C:15]([N:17]3[CH2:22][CH2:21][N:20]([CH:23]4[CH2:26][CH2:25][CH2:24]4)[CH2:19][CH2:18]3)=[O:16])[CH2:10][CH2:9]2)=[CH:6][CH:7]=1.[C:27]1(B(O)O)[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1>O1CCOCC1.C([O-])([O-])=O.[K+].[K+].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>[CH:23]1([N:20]2[CH2:21][CH2:22][N:17]([C:15](=[O:16])[CH2:14][N:11]3[CH2:12][CH2:13][N:8]([C:5]4[N:4]=[N:3][C:2]([C:27]5[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=5)=[CH:7][CH:6]=4)[CH2:9][CH2:10]3)[CH2:18][CH2:19]2)[CH2:26][CH2:25][CH2:24]1

Participants

6

Reactant 2

HCID 66827Phenylboronic AcidHCID 57443120HCID 57443120, compound

Product 1

HCID 57442335HCID 57442335, compound

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 11430Potassium CarbonateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
85 °C

Procedure

In a sealed vial, dissolve 3-chloro-6-{4-[2-(4-cyclobutylpiperazin-1-yl)-2-oxoethyl]piperazin-1-yl}pyridazine (15.1 mg, 0.04 mmol), phenyl boronic acid (9.8 mg, 0.08 mmol), and Pd(PPh3)4 (2.3 mg, 0.002 mmol) in dioxane (0.7 mL) and 2N K2CO3 (0.1 mL). Degas with N2 and seal the vial. Heat the mixture at 85° C. overnight. Cool and partition between EtOAc (0.5 mL) and 1N NaOH (0.5 mL). Extract the organic phase and place directly on an SCX ion exchange resin cartridge. Wash the resin with EtOAc/MeOH (9:1). Discard this wash. Wash the resin with EtOAc/MeOH/TEA(9:1:1) and collect. Remove the solvent to yield the title compound. 1H NMR (CDCl3) δ 8.00 (dd, 2H) 7.66 (d, 1H), 7.49-7.40 (m, 3H) 6.99 (d, 1H), 3.73 (t, 4H), 3.66-3.63 (m, 4H), 3.26 (s, 2H), 2.75-2.66 (m, 5H), 2.35-2.29 (m, 4H), 1.88-1.84 (m, 2H), 1.74-1.71 (m, 2H) 1.35-1.2 (m, 2H); LC-MS (M+1) 421.05.

Workup

  1. customDegas with N2
  2. customseal the vial
  3. temperatureCool
  4. custompartition between EtOAc (0.5 mL) and 1N NaOH (0.5 mL)
  5. extractionExtract the organic phase and place directly on an SCX ion exchange resin cartridge
  6. washWash the resin with EtOAc/MeOH (9:1)
  7. washWash the resin with EtOAc/MeOH/TEA(9:1:1)
  8. customcollect
  9. customRemove the solvent

Sources & evidence

ORD record
ord-dc1c2c24dd9f49cbbf514a7a17a0929d
Source dataset
uspto-grants-2010_12
Patent number
US07851474B2

Reaction notes

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