Sodium triacetoxyborohydride → 2-Chloro-9-methyl-6-morpholin-4-yl-8-{2-[4-(tetrahydropyran-4-yl)piperazin-1-yl]ethyl}-9H-purine

HRID 1945651Notes

Reaction equation

HRID 1945651 reaction equation
[Cl:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[C:7]([CH2:12][CH:13]=O)[N:8]2[CH3:11])=[C:4]([N:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)[N:3]=1.[O:21]1[CH2:26][CH2:25][CH:24]([N:27]2[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]2)[CH2:23][CH2:22]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[Cl:1][C:2]1[N:10]=[C:9]2[C:5]([N:6]=[C:7]([CH2:12][CH2:13][N:30]3[CH2:29][CH2:28][N:27]([CH:24]4[CH2:25][CH2:26][O:21][CH2:22][CH2:23]4)[CH2:32][CH2:31]3)[N:8]2[CH3:11])=[C:4]([N:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)[N:3]=1

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 219423151-(Oxan-4-yl)piperazineHCID 59605819(2-chloro-9-methyl-6-morpholin-4-yl-9H-purin-8-yl)acetaldehyde

Product 1

HCID 596052282-Chloro-9-methyl-6-morpholin-4-yl-8-{2-[4-(tetrahydropyran-4-yl)piperazin-1-yl]ethyl}-9H-purineYield 34.3%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

To a solution of (2-chloro-9-methyl-6-morpholin-4-yl-9H-purin-8-yl)acetaldehyde (72 mg, 0.24 mmol) in DCE (15 mL) was added 1-(tetrahydropyran-4-yl)piperazine (60 mg, 0.35 mmol), powdered 4 Å molecular sieves and sodium triacetoxyborohydride (103 mg, 0.49 mmol). The reaction mixture was stirred at room temperature for 17 h. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge, the cartridge was washed with MeOH then the desired product eluted with 2 M NH3/MeOH in DCM. The resulting residue was purified by column chromatography (Si—PCC, 0-10% MeOH in DCM) to give the title compound as a yellow solid (37 mg, 34%). LCMS (Method H): RT=2.46 min, [M+H]+ 450.5

Workup

  1. washthe cartridge was washed with MeOH
  2. washthe desired product eluted with 2 M NH3/MeOH in DCM
  3. customThe resulting residue was purified by column chromatography (Si—PCC, 0-10% MeOH in DCM)

Sources & evidence

ORD record
ord-cddfaa24210e41b5bbda3fbc6930245d
Source dataset
uspto-grants-2013_03
Patent number
US08394796B2

Reaction notes

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