Sodium borohydride → HCID 57931398, compound

HRID 1669537Notes

Reaction equation

HRID 1669537 reaction equation
[C:1]([O:5][C:6](=[O:40])[NH:7][CH2:8][C:9]([NH:11][S:12]([C:15]1[C:16]([C:21]2[CH:26]=[CH:25][C:24]([CH2:27][N:28]3[C:32]([CH:33]=[O:34])=[C:31]([Cl:35])[N:30]=[C:29]3[CH2:36][CH2:37][CH2:38][CH3:39])=[CH:23][CH:22]=2)=[CH:17][CH:18]=[CH:19][CH:20]=1)(=[O:14])=[O:13])=[O:10])([CH3:4])([CH3:3])[CH3:2].[BH4-].[Na+]>C(O)C>[C:1]([O:5][C:6](=[O:40])[NH:7][CH2:8][C:9]([NH:11][S:12]([C:15]1[C:16]([C:21]2[CH:26]=[CH:25][C:24]([CH2:27][N:28]3[C:32]([CH2:33][OH:34])=[C:31]([Cl:35])[N:30]=[C:29]3[CH2:36][CH2:37][CH2:38][CH3:39])=[CH:23][CH:22]=2)=[CH:17][CH:18]=[CH:19][CH:20]=1)(=[O:14])=[O:13])=[O:10])([CH3:4])([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 57931401HCID 57931401, compound

Product 1

HCID 57931398HCID 57931398, compoundYield 81.2%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To an ethanol (10 mL) solution of intermediate (1c) (738 mg, 1.25 mmol) was added solid sodium borohydride (62 mg, 1.6 mmol). The mixture was stirred at room temperature for 1 hour. After cooling to 0° C., the reaction was quenched by dropwise addition of a 50/50 solution of acetic acid/water until no effervescence was observed. EtOAc (100 mL) was added and the organic was washed 3 times with saturated aqueous NaCl (100 mL) and dried over anhydrous Na2SO4. The solvent was removed to provide intermediate (1d) as a white solid (600 mg). Anal. HPLC: retention time=3.3 minutes. Gradient conditions: 25% solvent B/75% solvent A to 95% solvent B/5% solvent B over 6 minutes. MS m/z: [M+H]+ calcd for C28H35ClN4O6S, 591.20; found 591.2.

Workup

  1. temperatureAfter cooling to 0° C.
  2. customthe reaction was quenched by dropwise addition of a 50/50 solution of acetic acid/water until no effervescence
  3. additionEtOAc (100 mL) was added
  4. washthe organic was washed 3 times with saturated aqueous NaCl (100 mL)
  5. dry with materialdried over anhydrous Na2SO4
  6. customThe solvent was removed

Sources & evidence

ORD record
ord-a62777703c424b9cb2681783c2207ce3
Source dataset
uspto-grants-2011_08
Patent number
US07989484B2

Reaction notes

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