Triphenylphosphine → HCID 178498434, compound

HRID 525443Notes

Reaction equation

HRID 525443 reaction equation
[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([C:12]([N:14]1[CH2:19][CH2:18][CH:17]([C:20]([O:22][CH3:23])=[O:21])[CH2:16][CH2:15]1)=[O:13])[CH:6]=[CH:5]2.[C:24]([C@@H:28]1[CH2:33][CH2:32][C@H:31](O)[CH2:30][CH2:29]1)([CH3:27])([CH3:26])[CH3:25].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C>C1COCC1.C(OCC)(=O)C>[C:24]([C@H:28]1[CH2:33][CH2:32][C@H:31]([O:1][C:2]2[CH:3]=[C:4]3[C:9](=[CH:10][CH:11]=2)[CH:8]=[C:7]([C:12]([N:14]2[CH2:19][CH2:18][CH:17]([C:20]([O:22][CH3:23])=[O:21])[CH2:16][CH2:15]2)=[O:13])[CH:6]=[CH:5]3)[CH2:30][CH2:29]1)([CH3:27])([CH3:26])[CH3:25]

Participants

7

Reactant 4

HCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 68279553Methyl 1-(6-hydroxy-2-naphthoyl)piperidine-4-carboxylateHCID 178445811HCID 178445811, compound

Product 1

HCID 178498434HCID 178498434, compoundYield 32%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

To a stirring mixture of methyl 1-(6-hydroxy-2-naphthoyl)piperidine-4-carboxylate (500 mg, 1.59 mmol), cis-4-(t-butyl)cyclohexanol (487 mg, 3.18 mmol, 2 equiv) and PPh3 (833 mg, 3.18 mmol, 2 eq) in THF (5 mL) was added DIAD (642 g, 3.18 mmol, 2 eq) at room temperate under N2 atmosphere, then the mixture was stirred at 80° C. for 12 h. The reaction mixture was diluted with ethyl acetate (20 mL) and washed with water (5 mL*3). The organic solvent was removed in vacuum and the residue was purified by silica gel chromatography (petroleum ether:ethyl acetate=1:1) to give methyl 1-(6-(trans-4-tert-butylcyclohexyloxy)-2-naphthoyl)piperidine-4-carboxylate (230 mg, yield: 32%) as a yellow solid. ESI-MS (M+1)+: 453.2. 1HNMR (400 MHz, CDCl3) δ: 7.76-7.70 (m, 3H), 7.43 (d, 1H), 7.18 (d, 1H), 7.16 (s, 1H), 4.32-4.26 (m, 1H), 3.71 (s, 3H), 3.08-3.06 (m, 2H), 2.60-2.58 (m, 1H), 2.28-2.26 (m, 2H), 1.91-1.88 (m, 4H), 1.67-1.65 (m, 4H), 1.29-1.26 (m, 2H), 1.12-1.11 (m, 3H), 0.88 (s, 9H).

Workup

  1. washwashed with water (5 mL*3)
  2. customThe organic solvent was removed in vacuum
  3. customthe residue was purified by silica gel chromatography (petroleum ether:ethyl acetate=1:1)

Sources & evidence

ORD record
ord-b770c6af8fed4c7a96c7eeddd90ccede
Source dataset
uspto-grants-2016_05
Patent number
US09340527B2

Reaction notes

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