Sodium borohydride → N-((R)-1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)propan-2-yl)-2-(1-hydroxyethyl)thiazole-4-carboxamide

HRID 872642Notes

Reaction equation

HRID 872642 reaction equation
[BH4-].[Na+].[C:3]([C:6]1[S:7][CH:8]=[C:9]([C:11]([NH:13][C@H:14]([CH3:30])[CH2:15][N:16]2[CH:20]=[CH:19][C:18]([C:21]3[CH:26]=[CH:25][C:24]([C:27]#[N:28])=[C:23]([Cl:29])[CH:22]=3)=[N:17]2)=[O:12])[N:10]=1)(=[O:5])[CH3:4]>C(O)C>[Cl:29][C:23]1[CH:22]=[C:21]([C:18]2[CH:19]=[CH:20][N:16]([CH2:15][C@H:14]([NH:13][C:11]([C:9]3[N:10]=[C:6]([CH:3]([OH:5])[CH3:4])[S:7][CH:8]=3)=[O:12])[CH3:30])[N:17]=2)[CH:26]=[CH:25][C:24]=1[C:27]#[N:28]

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 67172489(R)-2-acetyl-N-(1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)propan-2-yl)thiazole-4-carboxamide

Product 1

HCID 70656048N-((R)-1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)propan-2-yl)-2-(1-hydroxyethyl)thiazole-4-carboxamideYield 33.3%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Sodium borohydride (29.3 mg, 0.773 mmol) was added into a flask and the atmosphere was replaced with nitrogen. Dry ethanol was added and the reaction mixture was cooled to 0° C. (R)-2-acetyl-N-(1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)propan-2-yl)thiazole-4-carboxamide (160 mg, 0.387 mmol) was added and the reaction mixture was warmed slowly to RT while stirring overnight. The crude product was cooled to 0° C., the pH was adjusted to 6 and the mixture was evaporated. DCM and a few drops of methanol were added and the crude product was washed with 1M Na2CO3 and with water. The product was triturated using diethyl ether and DCM and heptane. Yield 33.3%. 1H-NMR (400 MHz; DMSO-d6): δ 1.09-1.17 (m, 3H), 1.45 (t, 3H), 2.38-4.53 (m, 3H), 4.92-5.02 (m, 1H), 6.23 (dd, 1H), 6.96 (dd, 1H), 7.85 (dd, 1H), 7.92-7.97 (m, 2H), 8.07-8.09 (m, 1H), 8.10 (d, 1H), 8.33-8.39 (m, 1H).

Workup

  1. additionwas added
  2. customthe mixture was evaporated
  3. additionDCM and a few drops of methanol were added
  4. washthe crude product was washed with 1M Na2CO3 and with water
  5. customThe product was triturated

Sources & evidence

ORD record
ord-53cd19361508496db0944de055b3998a
Source dataset
uspto-grants-2015_03
Patent number
US08975254B2

Reaction notes

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