Acetic Acid → (S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-((S)-4-isopropyl-3-methylpiperazin-1-yl)pyrimidin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

HRID 879613Notes

Reaction equation

HRID 879613 reaction equation
[C:1]([O:5][C@@H:6]([C:11]1[C:32]([CH3:33])=[CH:31][C:14]2[N:15]=[C:16]([C:18]3[CH:23]=[CH:22][N:21]=[C:20]([N:24]4[CH2:29][CH2:28][NH:27][C@@H:26]([CH3:30])[CH2:25]4)[N:19]=3)[S:17][C:13]=2[C:12]=1[C:34]1[CH:39]=[CH:38][C:37]([Cl:40])=[CH:36][CH:35]=1)[C:7]([O:9][CH3:10])=[O:8])([CH3:4])([CH3:3])[CH3:2].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C.[CH3:59][C:60]([CH3:62])=O>CN(C=O)C>[C:1]([O:5][C@@H:6]([C:11]1[C:32]([CH3:33])=[CH:31][C:14]2[N:15]=[C:16]([C:18]3[CH:23]=[CH:22][N:21]=[C:20]([N:24]4[CH2:29][CH2:28][N:27]([CH:60]([CH3:62])[CH3:59])[C@@H:26]([CH3:30])[CH2:25]4)[N:19]=3)[S:17][C:13]=2[C:12]=1[C:34]1[CH:35]=[CH:36][C:37]([Cl:40])=[CH:38][CH:39]=1)[C:7]([O:9][CH3:10])=[O:8])([CH3:2])([CH3:3])[CH3:4]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 180AcetoneHCID 5049666Sodium triacetoxyborohydrideHCID 86700421(S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-5-methyl-2-(2-((S)-3-methylpiperazin-1-yl)pyrimidin-4-yl)benzo[d]thiazol-6-yl)acetate

Product 1

HCID 86700425(S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-((S)-4-isopropyl-3-methylpiperazin-1-yl)pyrimidin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
60 °C

Procedure

To crude (S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-5-methyl-2-(2-((S)-3-methylpiperazin-1-yl)pyrimidin-4-yl)benzo[d]thiazol-6-yl)acetate (43.8 mg, 0.075 mmol) and sodium triacetoxyborohydride (80.1 mg, 0.377 mmol) in DMF (1 mL) was added acetic acid (22.7 mg, 21.6 μL, 0.377 mmol) and acetone (17.6 mg, 22.2 μL, 0.302 mmol). The reaction mixture was heated at 60° C. for 6.5 h. Upon completion of the reaction, the reaction mixture was filtered through Celite (ethyl acetate eluent) and concentrated. Purification by flash column chromatography on silica gel using 100:5:1 EtOAc/MeOH/NH4OH (0 to 100%) in EtOAc provided the product. LCMS-ESI+ calc'd for C33H41ClN5O3S (M+H1): 622.3; Found: 622.2 (M+H+).

Workup

  1. customUpon completion of the reaction
  2. filtrationthe reaction mixture was filtered through Celite (ethyl acetate eluent)
  3. concentrationconcentrated
  4. customPurification by flash column chromatography on silica gel using 100:5:1 EtOAc/MeOH/NH4OH (0 to 100%) in EtOAc
  5. customprovided the product

Sources & evidence

ORD record
ord-ac3d5f8e015c4b2d885c7d1ca110ade6
Source dataset
uspto-grants-2015_03
Patent number
US08987250B2

Reaction notes

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