2-Ethenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane → HCID 66584619, compound

HRID 2369015Notes

Reaction equation

HRID 2369015 reaction equation
Cl[C:2]1[CH:7]=[C:6]([N:8]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[CH2:9][O:10][CH2:11][CH2:12][Si:13]([CH3:16])([CH3:15])[CH3:14])[N:5]2[N:25]=[CH:26][C:27]([C:28]3[CH:29]=[N:30][C:31]4[C:36]([CH:37]=3)=[CH:35][C:34]([F:38])=[CH:33][CH:32]=4)=[C:4]2[N:3]=1.[CH:39](B1OC(C)(C)C(C)(C)O1)=[CH2:40]>O1CCOCC1.C([O-])([O-])=O.[Na+].[Na+].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>[F:38][C:34]1[CH:35]=[C:36]2[C:31](=[CH:32][CH:33]=1)[N:30]=[CH:29][C:28]([C:27]1[CH:26]=[N:25][N:5]3[C:6]([N:8]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[CH2:9][O:10][CH2:11][CH2:12][Si:13]([CH3:16])([CH3:15])[CH3:14])=[CH:7][C:2]([CH:39]=[CH2:40])=[N:3][C:4]=13)=[CH:37]2

Participants

6

Reactant 2

HCID 52330122-Ethenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 86686735HCID 86686735, compound

Product 1

HCID 66584619HCID 66584619, compoundYield 88.4%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 10340Sodium CarbonateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To 5-chloro-3-(6-fluoroquinolin-3-yl)-N,N-bis((2-(trimethylsilyl)ethoxy)methyl)pyrazolo[1,5-a]pyrimidin-7-amine (2.5 g, 4.4 mmol) in 1,4-Dioxane (50 mL) and 2M Na2CO3 (25 mL) was added vinylboronic acid pinacol ester (0.9 ml, 5.2 mmol), and Pd(PPh3)4 (0.5 g, 0.4 mmol). The reaction mixture was heated at 100° C. for 16 hours, at which time LC/MS analysis confirmed full consumption of starting material. Following removal of dioxane under reduced pressure, organics were extracted with CH2Cl2 (4×40 mL, dried (Na2SO4) and concentrated in vacuo. Gradient column chromatography on silica eluting with 20 to 50% EtOAc/hexanes gave 3-(6-fluoroquinolin-3-yl)-N,N-bis((2-(trimethylsilyl)ethoxy)methyl)-5-vinylpyrazolo[1,5-a]pyrimidin-7-amine as a yellow solid (2.2 g, 3.89 mmol, 88%). LC/MS: 3.05 mins, m/z=566.3 (MH+).

Workup

  1. customconsumption of starting material
  2. customremoval of dioxane under reduced pressure
  3. extractionorganics were extracted with CH2Cl2 (4×40 mL
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-d54ee2e3ef294b83bc61688c13453925
Source dataset
uspto-grants-2014_04
Patent number
US08703784B2

Reaction notes

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