Tetrahydrofuran → Dimethyl (2s,3s,5s)-5-(3-fluorophenoxy)-2-[(4-phenylpiperazin-1-yl)carbonyl]piperidine-1,3-dicarboxylate

HRID 535052Notes

Reaction equation

HRID 535052 reaction equation
[OH:1][C@H:2]1[CH2:7][N:6]([C:8]([O:10][CH3:11])=[O:9])[C@H:5]([C:12]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[CH2:16][CH2:15]2)=[O:13])[C@@H:4]([C:26]([O:28][CH3:29])=[O:27])[CH2:3]1.O1CCCC1.[F:35][C:36]1[CH:37]=[C:38](O)[CH:39]=[CH:40][CH:41]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>>[F:35][C:36]1[CH:41]=[C:40]([CH:39]=[CH:38][CH:37]=1)[O:1][C@@H:2]1[CH2:7][N:6]([C:8]([O:10][CH3:11])=[O:9])[C@H:5]([C:12]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[CH2:16][CH2:15]2)=[O:13])[C@@H:4]([C:26]([O:28][CH3:29])=[O:27])[CH2:3]1

Participants

6

Reactant 5

HCID 8028TetrahydrofuranHCID 97433-FluorophenolHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 67304460dimethyl(2S,3S,5R)-5-hydroxy-2-[(4-phenylpiperazin-1-yl)carbonyl]piperidine-1,3-dicarboxylate

Product 1

HCID 67304243Dimethyl (2s,3s,5s)-5-(3-fluorophenoxy)-2-[(4-phenylpiperazin-1-yl)carbonyl]piperidine-1,3-dicarboxylate

Conditions

Temperature
70 °C

Procedure

To a solution of dimethyl (2S,3S,5R)-5-hydroxy-2-[(4-phenylpiperazin-1-yl)carbonyl]piperidine-1,3-dicarboxylate (50.0 mg, 0.000123 mol) in tetrahydrofuran (0.50 mL, 0.00617 mol) was added 3-fluoro-phenol (0.0134 mL, 0.000148 mol), triphenylphosphine (38.8 mg, 0.000148 mol), followed by diethyl azodicarboxylate (0.0233 mL, 0.000148 mol). The mixture was heated at 70 Celsius overnight. After concentrated to dry, the mixture was purified on silica gel, eluting with 0 to 40% EtOAc in hexane, to generate the phenyl ether compound (27 mg, 44%). MS (ESI): (M+H)+=500.05.

Workup

  1. concentrationAfter concentrated
  2. customto dry
  3. customthe mixture was purified on silica gel
  4. washeluting with 0 to 40% EtOAc in hexane

Sources & evidence

ORD record
ord-9b9492cc4cf04a039caf4419f1b2b733
Source dataset
uspto-grants-2014_10
Patent number
US08853243B2

Reaction notes

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