Triethylamine → 1-{1-[5-chloro-2-methoxy-4-methyl-3-(1-oxetan-3-ylazetidin-3-yl)phenyl]ethyl}-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine

HRID 1499743Notes

Reaction equation

HRID 1499743 reaction equation
Cl.Cl.[NH:3]1[CH2:6][CH:5]([C:7]2[C:8]([O:28][CH3:29])=[C:9]([CH:15]([N:17]3[C:21]4=[N:22][CH:23]=[N:24][C:25]([NH2:26])=[C:20]4[C:19]([CH3:27])=[N:18]3)[CH3:16])[CH:10]=[C:11]([Cl:14])[C:12]=2[CH3:13])[CH2:4]1.[O:30]1[CH2:33][C:32](=O)[CH2:31]1.C(N(CC)CC)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[Cl:14][C:11]1[C:12]([CH3:13])=[C:7]([CH:5]2[CH2:4][N:3]([CH:32]3[CH2:33][O:30][CH2:31]3)[CH2:6]2)[C:8]([O:28][CH3:29])=[C:9]([CH:15]([N:17]2[C:21]3=[N:22][CH:23]=[N:24][C:25]([NH2:26])=[C:20]3[C:19]([CH3:27])=[N:18]2)[CH3:16])[CH:10]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 5049666Sodium triacetoxyborohydrideHCID 150242543-OxetanoneHCID 866776291-[1-(3-Azetidin-3-yl-5-chloro-2-methoxy-4-methylphenyl)ethyl]-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine dihydrochloride2×

Product 1

HCID 866776731-{1-[5-chloro-2-methoxy-4-methyl-3-(1-oxetan-3-ylazetidin-3-yl)phenyl]ethyl}-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amineYield 9.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of 1-[1-(3-azetidin-3-yl-5-chloro-2-methoxy-4-methylphenyl)ethyl]-3-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine dihydrochloride (21 mg, 0.046 mmol, racemic intermediate from Example 2, Step 1), oxetan-3-one (from Synthonix, 3.6 mg, 0.050 mmol), and triethylamine (20 μL, 0.14 mmol) in methylene chloride (0.32 mL) was added resin of sodium triacetoxyborohydride (40 mg, 0.091 mmol). The resulting mixture was stirred overnight at room temperature. The mixture was filtered and concentrated and then purified by RP-HPLC (XBridge C18 column, eluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 30 mL/min) to give the desired product (2 mg, 9.9%). The product was isolated as a racemic mixture. LCMS calculated for C22H28ClN6O2 (M+H)+: m/z=443.2; Found: 443.1.

Workup

  1. filtrationThe mixture was filtered
  2. concentrationconcentrated
  3. custompurified by RP-HPLC (XBridge C18 column
  4. washeluting with a gradient of acetonitrile/water containing 0.1% ammonium hydroxide, at flow rate of 30 mL/min)

Sources & evidence

ORD record
ord-a282c0907c2f4f5d8f49183172368cbe
Source dataset
uspto-grants-2015_12
Patent number
US09199982B2

Reaction notes

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