Sodium Bicarbonate → HCID 57971697, compound

HRID 2277008Notes

Reaction equation

HRID 2277008 reaction equation
[CH2:1]([O:5][CH:6]([O:8][NH:9][C:10]([C:12]1[S:16][C:15]2[CH:17]=[C:18]([CH:21]=O)[CH:19]=[CH:20][C:14]=2[CH:13]=1)=[O:11])[CH3:7])[CH:2]([CH3:4])[CH3:3].[CH:23]1([O:28][C:29](=[O:48])[C@@H:30]([NH:38][CH2:39][C:40]2[CH:45]=[CH:44][C:43]([CH2:46][NH2:47])=[CH:42][CH:41]=2)[CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH2:27][CH2:26][CH2:25][CH2:24]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>ClCCCl.C(O)(=O)C>[CH:23]1([O:28][C:29](=[O:48])[C@@H:30]([NH:38][CH2:39][C:40]2[CH:41]=[CH:42][C:43]([CH2:46][NH:47][CH2:21][C:18]3[CH:19]=[CH:20][C:14]4[CH:13]=[C:12]([C:10](=[O:11])[NH:9][O:8][CH:6]([O:5][CH2:1][CH:2]([CH3:3])[CH3:4])[CH3:7])[S:16][C:15]=4[CH:17]=3)=[CH:44][CH:45]=2)[CH2:31][C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH2:24][CH2:25][CH2:26][CH2:27]1

Participants

7

Reactant 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 57971602HCID 57971602, compoundHCID 57971713HCID 57971713, compound

Product 1

HCID 57971697HCID 57971697, compoundYield 21%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 176Acetic AcidSolvent

Procedure

6-formyl-benzo[b]thiophene-2-carboxylic acid (1-isobutoxy-ethoxy) amide (Scheme 7) (220 mg, 0.68 mmol) and (S)-2-(4-Aminomethyl-benzylamino)-3-phenyl-propionic acid cyclopentyl ester (263 mg, 0.75 mmol) were dissolved in DCE (10 mL) under an atmosphere of N2. Sodium triacetoxyborohydride (430 mg, 2.04 mmol) and acetic acid (50 μL) were added and the reaction stirred at r.t for 3 h. Sodium hydrogen carbonate (20 mL) was added and the reaction mixture extracted with dichloromethane (3×50 mL). The organic layers were combined and concentrated. The residue was purified by column chromatography (50%-100% EtOAc/heptane) to give the protected compound (80 mg, 21%). m/z 658 [M++H]+

Workup

  1. extractionthe reaction mixture extracted with dichloromethane (3×50 mL)
  2. concentrationconcentrated
  3. customThe residue was purified by column chromatography (50%-100% EtOAc/heptane)

Sources & evidence

ORD record
ord-e28649dbd59548b29c2f4140049e3557
Source dataset
uspto-grants-2015_09
Patent number
US09133104B2

Reaction notes

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