Sodium triacetoxyborohydride → HCID 59606136, compound

HRID 1923282Notes

Reaction equation

HRID 1923282 reaction equation
[CH2:1]([C:3]1[N:7]([C:8]2[N:16]=[C:15]3[C:11]([N:12]=[C:13]([CH:18]=O)[N:14]3[CH3:17])=[C:10]([N:20]3[CH2:25][CH2:24][O:23][CH2:22][CH2:21]3)[N:9]=2)[C:6]2[CH:26]=[CH:27][CH:28]=[CH:29][C:5]=2[N:4]=1)[CH3:2].[NH:30]1[CH2:33][CH:32]([N:34]2[CH2:38][CH2:37][CH2:36][C:35]2=[O:39])[CH2:31]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH2:1]([C:3]1[N:7]([C:8]2[N:16]=[C:15]3[C:11]([N:12]=[C:13]([CH2:18][N:30]4[CH2:33][CH:32]([N:34]5[CH2:38][CH2:37][CH2:36][C:35]5=[O:39])[CH2:31]4)[N:14]3[CH3:17])=[C:10]([N:20]3[CH2:21][CH2:22][O:23][CH2:24][CH2:25]3)[N:9]=2)[C:6]2[CH:26]=[CH:27][CH:28]=[CH:29][C:5]=2[N:4]=1)[CH3:2]

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 596059872-(2-Ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carbaldehydeHCID 59606190HCID 59606190, compound

Product 1

HCID 59606136HCID 59606136, compoundYield 64%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A mixture of 2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carbaldehyde (165 mg, 0.42 mmol), 1-azetidin-3-ylpyrrolidin-2-one (65 mg, 0.46 mmol) and 4 Å powdered molecular sieves in DCE (4 mL) was stirred at room temperature for 2 h before the addition of sodium triacetoxyborohydride (180 mg, 0.84 mmol). The reaction mixture was stirred for 65 h then filtered through celite, washing with DCM. The organic phase was washed with brine and concentrated in vacuo. The organic phase was dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%) affording 588 as an orange foam (138 mg, 64%). LCMS (method I): RT 2.42 min [M+H]+ 516.2 1H NMR (CDCl3, 300 MHz): δ 8.00 (m, 1 H), 7.76 (m, 1 H), 7.27 (m, 2 H), 4.83 (t, J=6.9 Hz, 1 H), 4.35 (m, 4 H), 3.89-3.82 (m, 9 H), 3.67-3.54 (m, 4 H), 3.36 (m, 4 H), 2.42 (t, J=8.1 Hz, 2 H), 2.07 (m, 2 H) and 1.45 (t, J=7.5 Hz, 3 H)

Workup

  1. filtrationthen filtered through celite
  2. washwashing with DCM
  3. washThe organic phase was washed with brine
  4. concentrationconcentrated in vacuo
  5. dry with materialThe organic phase was dried (Na2SO4)
  6. concentrationconcentrated in vacuo
  7. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-15%)

Sources & evidence

ORD record
ord-cdb283e3ebef4b4c9e1e93c89d6f8248
Source dataset
uspto-grants-2012_05
Patent number
US08173650B2

Reaction notes

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