Tetrahydrofuran → HCID 86651046, compound

HRID 884877Notes

Reaction equation

HRID 884877 reaction equation
O[C:2]1[CH:7]=[CH:6][C:5]([C:8]([F:14])([F:13])[C:9]([F:12])([F:11])[F:10])=[CH:4][C:3]=1[NH:15][C:16](=[O:23])[C:17]1[CH:22]=[CH:21][N:20]=[CH:19][CH:18]=1.O1CCCC1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>C1(C)C=CC=CC=1>[F:14][C:8]([F:13])([C:5]1[CH:6]=[CH:7][C:2]2[O:23][C:16]([C:17]3[CH:22]=[CH:21][N:20]=[CH:19][CH:18]=3)=[N:15][C:3]=2[CH:4]=1)[C:9]([F:10])([F:12])[F:11]

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 86651047HCID 86651047, compound

Product 1

HCID 86651046HCID 86651046, compoundYield 88.5%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

To a mixture of 0.49 g of N-[2-hydroxy-5-(pentafluoroethyl)phenyl]isonicotinamide, 5 ml of tetrahydrofuran and 0.46 g of triphenylphosphine, 0.77 g of 40% toluene solution of diethyl azodicarboxylate was added dropwise at room temperature. The reaction mixture was stirred for 1.8 hours. The reaction mixture was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.41 g of 5-(pentafluoroethyl)-2-(pyridin-4-yl)-benzoxazole (hereinafter, referred to as “active compound 65”).

Workup

  1. additionwas added dropwise at room temperature
  2. concentrationThe reaction mixture was concentrated under reduced pressure

Sources & evidence

ORD record
ord-597184df9b6246d9b9cf2e402208d096
Source dataset
uspto-grants-2012_08
Patent number
US08242133B2

Reaction notes

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