Tetrahydrofuran → tert-Butyl cis(+/-)-4-{benzyl[(benzyloxy)carbonyl]amino}-3-[{2-methyl-2-propen-1-yl}oxy]piperidine-1-carboxylate

HRID 43711Notes

Reaction equation

HRID 43711 reaction equation
[CH2:1]([NH:8][C@H:9]1[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:11][C@H:10]1[O:22][CH2:23][C:24]([CH3:26])=[CH2:25])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)(O)[O-].[Na+].Cl[C:33]([O:35][CH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)=[O:34].C1COCC1>O>[CH2:1]([N:8]([C:33]([O:35][CH2:36][C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1)=[O:34])[C@H:9]1[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:19])([CH3:20])[CH3:21])=[O:16])[CH2:11][C@H:10]1[O:22][CH2:23][C:24]([CH3:26])=[CH2:25])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 10387Benzyl chloroformateHCID 516892Sodium BicarbonateHCID 86648620tert-Butyl cis(+/-)-4-(benzylamino)-3-[(2-methyl-2-propen-1-yl)oxy]piperidine-1-carboxylate

Product 1

HCID 68405960tert-Butyl cis(+/-)-4-{benzyl[(benzyloxy)carbonyl]amino}-3-[{2-methyl-2-propen-1-yl}oxy]piperidine-1-carboxylateYield 90.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The same operation as in Example (103a) was performed using tert-butyl cis(±)-4-(benzylamino)-3-[(2-methyl-2-propen-1-yl)oxy]piperidine-1-carboxylate obtained in Example (117c) (4.4 g, 12.2 mmol), sodium bicarbonate, benzyl chloroformate (2.81 g, 16 mmol), THF (15 mL) and water (15 mL). The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/4, 1/2, 1/1) to obtain 5.46 g of the title compound as a colorless oily substance (99%).

Workup

  1. customThe residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/4, 1/2, 1/1)

Sources & evidence

ORD record
ord-8447ac16a2cd439ab94d4764ba041193
Source dataset
uspto-grants-2013_09
Patent number
US08536197B2

Reaction notes

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