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

HRID 1809933Notes

Reaction equation

HRID 1809933 reaction equation
[OH:1][C:2]1([C:9]2[CH:14]=[CH:13][C:12]([I:15])=[CH:11][CH:10]=2)[CH2:7][CH2:6][C:5](=O)[CH2:4][CH2:3]1.[NH:16]1[CH2:20][CH2:19][C@@H:18]([NH:21][C:22]([CH2:24][NH:25][C:26](=[O:37])[C:27]2[CH:32]=[CH:31][CH:30]=[C:29]([C:33]([F:36])([F:35])[F:34])[CH:28]=2)=[O:23])[CH2:17]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[OH:1][C:2]1([C:9]2[CH:14]=[CH:13][C:12]([I:15])=[CH:11][CH:10]=2)[CH2:7][CH2:6][CH:5]([N:16]2[CH2:20][CH2:19][C@@H:18]([NH:21][C:22](=[O:23])[CH2:24][NH:25][C:26](=[O:37])[C:27]3[CH:32]=[CH:31][CH:30]=[C:29]([C:33]([F:34])([F:36])[F:35])[CH:28]=3)[CH2:17]2)[CH2:4][CH2:3]1

Participants

5

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 59556069(R)-N-(2-oxo-2-(pyrrolidin-3-ylamino)ethyl)-3-(trifluoromethyl)benzamideHCID 595561854-Hydroxy-4-(4-iodophenyl)cyclohexanone

Product 1

HCID 66787502N-[2-({(3R)-1-[4-Hydroxy-4-(4-iodophenyl)cyclohexyl]pyrrolidin-3-yl}amino)-2 oxoethyl]-3-(trifluoromethyl)benzamideYield 36.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 4-hydroxy-4-(4-iodophenyl)cyclohexanone (624 mg, 2 mmol) in CH2Cl2 (10 mL) was added N-((3R)-pyrrolidin-3-ylcarbamoylmethyl)-3-trifluoromethylbenzamide (730 mg, 2 mmol) and then NaBH(OAc)3 (666 mg, 3 mmol). After stirred for 1 h, the reaction was quenched with 10% NaHCO3, and extracted with EtOAc. The organic extracts were combined, washed with saline solution, dried over sodium sulfate, concentrated in vacuo. The residue was chromatographed on silica gel, eluting with 1% NH4OH in ethyl acetate/methanol (100/0 to 10/90) to yield the major isomer (544 mg, 44.2%) and the minor isomer (446 mg, 36.3% yield). For the major isomer, LCMS: 615.2 (M+H+, 100%); 1H NMR: (CDCl3) δ 8.09, (s, 1H); 7.98, (d, 1H); 7.77, (d, 1H); 7.67, (d, 2H); 7.57, (t, 1H); 7.28, (d, 2H); 7.22, (t, 1H, NH); 6.44, (d, 1H, NH); 4.49, (m, 1H); 4.12, (m, 2H); 2.87, (m, 1H); 2.64, (m, 2H); 2.38, (m, 1H); 2.25, (m, 4H); 1.93, (m, 2H); 1.54-1.70, (m, 6H).

Workup

  1. customthe reaction was quenched with 10% NaHCO3
  2. extractionextracted with EtOAc
  3. washwashed with saline solution
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was chromatographed on silica gel
  7. washeluting with 1% NH4OH in ethyl acetate/methanol (100/0 to 10/90)
  8. customto yield the major isomer (544 mg, 44.2%)

Sources & evidence

ORD record
ord-25adb68e6c5c40a1b6664fc2b1764a98
Source dataset
uspto-grants-2013_01
Patent number
US08362003B2

Reaction notes

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