Sodium Bicarbonate → HCID 59397821, compound

HRID 39935Notes

Reaction equation

HRID 39935 reaction equation
[CH2:1]([O:8][C:9]1[C:18]2[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=2)[N:12]([CH2:19][CH:20]=O)[C:11](=[O:22])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O:23]1[C:28]2[CH:29]=[CH:30][C:31]([CH2:33][N:34]([CH:42]3[CH2:47][CH2:46][NH:45][CH2:44][CH2:43]3)[C:35](=[O:41])[O:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[CH:32][C:27]=2[O:26][CH2:25][CH2:24]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)([O-])O.[Na+]>C(O)(=O)C.ClCCl>[CH2:1]([O:8][C:9]1[C:18]2[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=2)[N:12]([CH2:19][CH2:20][N:45]2[CH2:46][CH2:47][CH:42]([N:34]([CH2:33][C:31]3[CH:30]=[CH:29][C:28]4[O:23][CH2:24][CH2:25][O:26][C:27]=4[CH:32]=3)[C:35](=[O:41])[O:36][C:37]([CH3:39])([CH3:38])[CH3:40])[CH2:43][CH2:44]2)[C:11](=[O:22])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 57815320Tert-butyl (2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(piperidin-4-yl)carbamateHCID 59397933HCID 59397933, compound

Product 1

HCID 59397821HCID 59397821, compoundYield 82%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 6344DichloromethaneSolvent2×

Procedure

To 30 mL of a dichloromethane solution containing 1.20 g of (4-benzyloxy-2-oxoquinolin-1(2H)-yl)acetaldehyde, 40 mL of a dichloromethane solution containing 1.71 g of tert-butyl (2,3-dihydro-1,4-benzodioxin-6-ylmethyl)(piperidin-4-yl)carbamate and 0.25 g of acetic acid were added, and stirred at room temperature for 90 min. To the reaction mixture, 1.37 g of sodium triacetoxyborohydride was added, and stirred at the same temperature for 2.5 hours. Aqueous saturated sodium hydrogen carbonate solution was added, the organic layer was separated, and the aqueous layer was extracted with chloroform. The organic layer and extracts were combined, washed with aqueous saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The residue thus obtained was purified by silica gel column chromatography [eluent; hexane:ethyl acetate=1:1], to give 2.10 g of tert-butyl (1-(2-(4-benzyloxy-2-oxoquinolin-1(2H)-yl)ethyl)piperidin-4-yl)(2,3-dihydro-1,4-benzodioxin-6-ylmethyl)carbamate as a white solid.

Workup

  1. additionwere added
  2. stirringstirred at the same temperature for 2.5 hours
  3. customthe organic layer was separated
  4. extractionthe aqueous layer was extracted with chloroform
  5. washwashed with aqueous saturated sodium chloride solution
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customthe solvent was removed under reduced pressure
  8. customThe residue thus obtained
  9. customwas purified by silica gel column chromatography [eluent; hexane:ethyl acetate=1:1]

Sources & evidence

ORD record
ord-f0c23d4cbcd34be1b782e6fda06412fc
Source dataset
uspto-grants-2013_09
Patent number
US08524738B2

Reaction notes

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