Sodium triacetoxyborohydride → N-[2-({(3R)-1-[4-Hydroxy-4-(1,3-thiazol-2-yl)cyclohexyl]pyrrolidin-3-yl}amino)-2-oxoethyl]-3-(trifluoromethyl)benzamide

HRID 1016032Notes

Reaction equation

HRID 1016032 reaction equation
[OH:1][C:2]1([C:9]2[S:10][CH:11]=[CH:12][N:13]=2)[CH2:7][CH2:6][C:5](=O)[CH2:4][CH2:3]1.[O:14]=[C:15]([NH:30][CH2:31][C:32](=O)[NH:33][C@@H:34]1[CH2:38]CNC1)[CH2:16][NH:17][C:18](=[O:29])[C:19]1[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>CC(O)=O.C(Cl)Cl.CCOC(C)=O>[OH:1][C:2]1([C:9]2[S:10][CH:11]=[CH:12][N:13]=2)[CH2:7][CH2:6][CH:5]([N:33]2[CH2:34][CH2:38][C@@H:31]([NH:30][C:15](=[O:14])[CH2:16][NH:17][C:18](=[O:29])[C:19]3[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=3)[CH2:32]2)[CH2:4][CH2:3]1

Participants

6

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 590174374-Hydroxy-4-thiazol-2-yl-cyclohexanoneHCID 66787189N-[2-oxo-2-({2-oxo-2-[(3R)-pyrrolidin-3-ylamino]ethyl}amino)ethyl]-3-(trifluoromethyl)benzamide

Product 1

HCID 58751593N-[2-({(3R)-1-[4-Hydroxy-4-(1,3-thiazol-2-yl)cyclohexyl]pyrrolidin-3-yl}amino)-2-oxoethyl]-3-(trifluoromethyl)benzamideYield 90%

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 21922555Acetic acid methylene chlorideSolvent

Procedure

To a mixture of 4-hydroxy-4-(1,3-thiazol-2-yl)cyclohexanone (0.075 g, 0.38 mmol) and N-[2-oxo-2-({2-oxo-2-[(3R)-pyrrolidin-3-ylamino]ethyl}amino)ethyl]-3-(trifluoromethyl)benzamide (0.10 g, 0.317 mmol) in 2% AcOH/CH2Cl2 (10 mL) was added NaB(OAc)3H (0.134 g, 0.634 mmol). After being stirred overnight at room temperature under N2, the reaction mixture was diluted with EtOAc and washed with saturated Na2CO3. The aqueous was extracted with EtOAc (3×). The combined organic layers were dried (MgSO4), concentrated and flash chromatographed [EtOAc to MeOH/EtOAc (1:9) then to 5% MeOH/EtOAc/Et3N (1:9:0.5)] to give 0.141 g of the title compound in 90% yield. MS (EI) calcd: (M+H)+=497.2; found: 497.3.

Workup

  1. washwashed with saturated Na2CO3
  2. extractionThe aqueous was extracted with EtOAc (3×)
  3. dry with materialThe combined organic layers were dried (MgSO4)
  4. concentrationconcentrated
  5. customflash chromatographed [EtOAc to MeOH/EtOAc (1:9)

Sources & evidence

ORD record
ord-f62c973f75fc4c86928e57d575108f47
Source dataset
uspto-grants-2011_07
Patent number
US07985730B2

Reaction notes

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