Tetrahydrofuran → HCID 86651052, compound

HRID 2094396Notes

Reaction equation

HRID 2094396 reaction equation
[Cl:1][C:2]1[CH:27]=[N:26][CH:25]=[CH:24][C:3]=1[C:4]([NH:6][C:7]1[CH:12]=[C:11]([C:13]([F:22])([C:18]([F:21])([F:20])[F:19])[C:14]([F:17])([F:16])[F:15])[CH:10]=[CH:9][C:8]=1O)=[O:5].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>[Cl:1][C:2]1[CH:27]=[N:26][CH:25]=[CH:24][C:3]=1[C:4]1[O:5][C:8]2[CH:9]=[CH:10][C:11]([C:13]([F:22])([C:18]([F:20])([F:19])[F:21])[C:14]([F:17])([F:16])[F:15])=[CH:12][C:7]=2[N:6]=1

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 86651053HCID 86651053, compound

Product 1

HCID 86651052HCID 86651052, compoundYield 67.4%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

To a mixture of 0.90 g of 3-chloro-N-[2-hydroxy-5-(heptafluoroisopropyl)phenyl]isonicotinamide, 10 ml of tetrahydrofuran and 0.68 g of triphenylphosphine, 1.13 g of 40% toluene solution of diethyl azodicarboxylate was added dropwise at room temperature. The reaction mixture was stirred for 1.2 hours. The reaction mixture was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.58 g of 2-(3-chloropyridin-4-yl)-5-(heptafluoroisopropyl)benzoxazole (hereinafter, referred to as “active compound 68”).

Workup

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

Sources & evidence

ORD record
ord-5b823d62760e48df804703537024c6fd
Source dataset
uspto-grants-2013_05
Patent number
US08445522B2

Reaction notes

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