Acetic Acid → HCID 178420048, compound

HRID 1051333Notes

Reaction equation

HRID 1051333 reaction equation
[C:1]1([C:7]2[N:11]3[CH:12]=[CH:13][CH:14]=[N:15][C:10]3=[N:9][C:8]=2[C:16]2[CH:23]=[CH:22][C:19]([CH:20]=O)=[CH:18][CH:17]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(N(CC)CC)C.Cl.Cl.[NH:33]1[CH2:38][CH2:37][CH:36]([C:39]2[N:43]=[C:42]([C:44]3[CH:49]=[CH:48][N:47]=[CH:46][CH:45]=3)[NH:41][N:40]=2)[CH2:35][CH2:34]1.C(O)(=O)C.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C1COCC1.C(Cl)(Cl)Cl>[C:1]1([C:7]2[N:11]3[CH:12]=[CH:13][CH:14]=[N:15][C:10]3=[N:9][C:8]=2[C:16]2[CH:23]=[CH:22][C:19]([CH2:20][N:33]3[CH2:38][CH2:37][CH:36]([C:39]4[N:43]=[C:42]([C:44]5[CH:49]=[CH:48][N:47]=[CH:46][CH:45]=5)[NH:41][N:40]=4)[CH2:35][CH2:34]3)=[CH:18][CH:17]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

8

Reactant 5

HCID 176Acetic AcidHCID 8471TriethylamineHCID 5049666Sodium triacetoxyborohydrideHCID 86631773HCID 86631773, compoundHCID 178478528HCID 178478528, compound2×

Product 1

HCID 178420048HCID 178420048, compound

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 0.094 g (0.314 mM) 4-(3-phenylimidazo[1,2-a]pyrimidin-2-yl)benzaldehyde in 3 mL of THF is added triethylamine (2 eq). The reaction mixture is stirred for 5 minutes. To this solution is added 4-[3-(piperidin-4-yl)-1H-1,2,4-triazol-5-yl]pyridine 2HCl (1.5 eq) (Intermediate B) followed by acetic acid (2.5 eq). The reaction mixture is stirred for 10 minutes. To this mixture is added NaBH(OAc)3 (6 eq) over a period of 40 minutes. The reaction mixture is stirred overnight. The reaction mixture is quenched with methanol and concentrated. The residue obtained is taken up in chloroform and washed with water, dried and concentrated. The crude is purified on a flash column chromatography to obtain the desired compound.

Workup

  1. stirringThe reaction mixture is stirred for 10 minutes
  2. stirringThe reaction mixture is stirred overnight
  3. customThe reaction mixture is quenched with methanol
  4. concentrationconcentrated
  5. customThe residue obtained
  6. washwashed with water
  7. customdried
  8. concentrationconcentrated
  9. customThe crude is purified on a flash column chromatography

Sources & evidence

ORD record
ord-386ae4e546004939b3ae3631151a6ad8
Source dataset
uspto-grants-2016_07
Patent number
US09387204B2

Reaction notes

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