Sodium Carbonate → 5-(7,7-dimethyl-4-morpholino-6H-[1,4]dioxino[2,3-d]pyrimidin-2-yl)-N-methyl-pyridin-2-amine

HRID 528485Notes

Reaction equation

HRID 528485 reaction equation
Cl[C:2]1[N:3]=[C:4]([N:14]2[CH2:19][CH2:18][O:17][CH2:16][CH2:15]2)[C:5]2[O:11][CH2:10][C:9]([CH3:13])([CH3:12])[O:8][C:6]=2[N:7]=1.C(O[C:25](=O)[N:26](C)[C:27]1[CH:32]=[CH:31][C:30](B2OC(C)(C)C(C)(C)O2)=[CH:29][N:28]=1)(C)(C)C.C(=O)([O-])[O-].[Na+].[Na+]>C(#N)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:12][C:9]1([CH3:13])[O:8][C:6]2[N:7]=[C:2]([C:30]3[CH:31]=[CH:32][C:27]([NH:26][CH3:25])=[N:28][CH:29]=3)[N:3]=[C:4]([N:14]3[CH2:19][CH2:18][O:17][CH2:16][CH2:15]3)[C:5]=2[O:11][CH2:10]1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 445416766-(Boc-methylamino)pyridine-3-boronic acid pinacol esterHCID 867117472-Chloro-7,7-dimethyl-4-morpholin-4-yl-6,7-dihydro-[1,4]dioxino[2,3-d]pyrimidine

Product 1

HCID 734256155-(7,7-dimethyl-4-morpholino-6H-[1,4]dioxino[2,3-d]pyrimidin-2-yl)-N-methyl-pyridin-2-amineYield 32%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
120 °C

Procedure

A microwave vial was charged with 2-chloro-7,7-dimethyl-4-morpholin-4-yl-6,7-dihydro-[1,4]dioxino[2,3-d]pyrimidine from Example 104 (50 mg, 0.18 mmol), methyl-[5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyridin-2-yl]-carbamic acid tert-butyl ester (88 mg, 0.26 mmol), Pd(PPh3)2Cl2 (12 mg, 0.02 mmol) and sodium carbonate (0.5 mL, 0.5 mmol, 1M aqueous solution) in acetonitrile (1.5 mL) then evacuated and back filled with nitrogen before being heated at 120° C. for 30 minutes using microwave irradiation. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge which was washed with methanol and the product eluted with 2M ammonia in methanol. The basic fractions were combined and concentrated in vacuo. The resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18, 0.1% HCO2H in water on a gradient of acetonitrile 5-98%) affording 113 as a white solid (20 mg, 32%). LCMS: RT=2.79 min, [M+H]+=358. 1H NMR (400 MHz, CDCl3): δ 9.04 (1H, d, J=2.4 Hz), 8.35 (1H, dd, J=2.4, 8.6 Hz), 6.39 (1H, d, J=8.6 Hz), 4.84 (1H, broad s), 3.89 (2H, s), 3.85-3.76 (8H, m), 2.97 (3H, d, J=5.2 Hz), 1.45 (6H, s)

Workup

  1. customthen evacuated
  2. additionback filled with nitrogen
  3. custommicrowave irradiation
  4. washwas washed with methanol
  5. washthe product eluted with 2M ammonia in methanol
  6. concentrationconcentrated in vacuo
  7. customThe resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18, 0.1% HCO2H in water on a gradient of acetonitrile 5-98%)

Sources & evidence

ORD record
ord-27a1fd692786429cb38d25f015c6afda
Source dataset
uspto-grants-2016_05
Patent number
US09346817B2

Reaction notes

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