Cesium carbonate → HCID 178497581, compound

HRID 707306Notes

Reaction equation

HRID 707306 reaction equation
Cl[C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[C@H:11]1[CH2:14][C@H:13]([NH:15][C:16]2[N:25]=[CH:24][C:23]3[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=3)[N:17]=2)[CH2:12]1.[CH3:26][O:27][C:28]([C:30]1[CH:35]=[CH:34][C:33](B(O)O)=[CH:32][CH:31]=1)=[O:29].C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.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>[N:17]1[C:18]2[C:23](=[CH:22][CH:21]=[CH:20][CH:19]=2)[CH:24]=[N:25][C:16]=1[NH:15][C@H:13]1[CH2:14][C@H:11]([N:6]2[CH:5]=[N:4][C:3]3[C:7]2=[N:8][CH:9]=[N:10][C:2]=3[C:33]2[CH:34]=[CH:35][C:30]([C:28]([O:27][CH3:26])=[O:29])=[CH:31][CH:32]=2)[CH2:12]1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 27343694-Methoxycarbonylphenylboronic acidHCID 178478378HCID 178478378, compound

Product 1

HCID 178497581HCID 178497581, compoundYield 37.7%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

N-(Trans-3-(6-chloro-9H-purin-9-yl)cyclobutyl)quinazolin-2-amine (example 21, 0.110 g, 0.313 mmol), tetrakis(triphenylphosphine)palladium (0.018 g, 0.016 mmol), (4-methoxycarbonylphenyl)boronic acid (0.073 g, 0.406 mmol), and cesium carbonate (0.357 g, 1.094 mmol) were suspended in a mixture of dioxane (1.25 mL) and water (0.15 mL) and heated in the microwave to 120° C. for 25 minutes. The crude was partitioned between ethyl acetate (200 mL) and water (200 mL). The organic phase was dried with magnesium sulfate and evaporated to dryness under reduced pressure. Purification using silica chromatography (0-3% methanol in dichloromethane gradient) gave the desired methyl 4-(9-(trans-3-(quinazolin-2-ylamino)cyclobutyl)-9H-purin-6-yl)benzoate (0.0531 g, 0.118 mmol, 37.6% yield). M+1: 452.1. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.89 (ddd, J=13.60, 8.51, 4.89 Hz, 2 H) 3.15-3.33 (m, 2 H) 3.98 (s, 3 H) 4.89-5.00 (m, 1 H) 5.44 (quin, J=7.34 Hz, 1 H) 7.30-7.35 (m, 1 H) 7.65 (d, J=8.41 Hz, 1 H) 7.69-7.81 (m, 2 H) 8.24 (d, J=8.41 Hz, 2 H) 8.45 (s, 1 H) 8.84 (d, J=8.41 Hz, 2 H) 9.01-9.14 (m, 2 H).

Workup

  1. customThe crude was partitioned between ethyl acetate (200 mL) and water (200 mL)
  2. dry with materialThe organic phase was dried with magnesium sulfate
  3. customevaporated to dryness under reduced pressure
  4. customPurification

Sources & evidence

ORD record
ord-2f4d631af82742cab29396b29f17f3a0
Source dataset
uspto-grants-2015_11
Patent number
US09174992B2

Reaction notes

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