Sodium Bicarbonate → HCID 90052141, compound

HRID 2284746Notes

Reaction equation

HRID 2284746 reaction equation
[NH2:1][C:2]([CH2:26][CH2:27][O:28][CH3:29])([CH2:22][CH2:23][O:24][CH3:25])[CH2:3][NH:4][C:5](=[O:21])[O:6][CH2:7][CH:8]1[C:20]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][CH:13]=2.[CH:30](=O)[CH2:31][CH2:32][C:33]#[CH:34].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>C(Cl)Cl.C(OCC)(=O)C.C(O)(=O)C>[CH3:29][O:28][CH2:27][CH2:26][C:2]([CH2:22][CH2:23][O:24][CH3:25])([NH:1][CH2:34][CH2:33][CH2:32][C:31]#[CH:30])[CH2:3][NH:4][C:5](=[O:21])[O:6][CH2:7][CH:8]1[C:20]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][CH:13]=2

Participants

8

Reactant 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 11804674HCID 11804674, compoundHCID 90052139HCID 90052139, compound

Product 1

HCID 90052141HCID 90052141, compound

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of (9H-fluoren-9-yl)methyl (2-amino-4-methoxy-2-(2-methoxyethyl)butyl)carbamate (G23, 186 mg) and 4-pentynal (42 mg) in methylene chloride (5 mL), sodium triacetoxyborohydride (247 mg) and acetic acid (26 μL) were added at room temperature, and the mixture was stirred at the same temperature for 3 hours. To the reaction mixture, ethyl acetate and saturated aqueous sodium hydrogencarbonate were added. The organic layer was separated, washed with saturated aqueous sodium chloride, and then dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent, 60 to 0% hexane in ethyl acetate) to obtain (9H-fluoren-9-yl)methyl (4-methoxy-2-(2-methoxyethyl)-2-((4-pentyn-1-yl)amino)butyl)carbamate (G24, 102 mg).

Workup

  1. customThe organic layer was separated
  2. washwashed with saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous sodium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe obtained residue was purified by silica gel column chromatography (eluent, 60 to 0% hexane in ethyl acetate)

Sources & evidence

ORD record
ord-7e69bf50e88f4597a86ae330a51c36e0
Source dataset
uspto-grants-2015_09
Patent number
US09145415B2

Reaction notes

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