Triethylamine → 4-[1-(4-pentafluoroethyloxy-phenyl)-1H-[1,2,4]triazol-3-yl]-benzoyl azide

HRID 1475142Notes

Reaction equation

HRID 1475142 reaction equation
[F:1][C:2]([F:28])([O:7][C:8]1[CH:13]=[CH:12][C:11]([N:14]2[CH:18]=[N:17][C:16]([C:19]3[CH:27]=[CH:26][C:22]([C:23]([OH:25])=O)=[CH:21][CH:20]=3)=[N:15]2)=[CH:10][CH:9]=1)[C:3]([F:6])([F:5])[F:4].C1(P([N:43]=[N+:44]=[N-:45])(C2C=CC=CC=2)=O)C=CC=CC=1.C(N(CC)CC)C>CC(O)(C)C>[F:28][C:2]([F:1])([O:7][C:8]1[CH:13]=[CH:12][C:11]([N:14]2[CH:18]=[N:17][C:16]([C:19]3[CH:27]=[CH:26][C:22]([C:23]([N:43]=[N+:44]=[N-:45])=[O:25])=[CH:21][CH:20]=3)=[N:15]2)=[CH:10][CH:9]=1)[C:3]([F:5])([F:6])[F:4]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 782101774-(1-(4-(perfluoroethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzoic acid

Product 1

HCID 866333834-[1-(4-pentafluoroethyloxy-phenyl)-1H-[1,2,4]triazol-3-yl]-benzoyl azide

Reagents, catalysts & solvents 1

HCID 6386tert-ButanolSolvent

Procedure

A solution of 4-[1-(4-pentafluoroethyloxy-phenyl)-1H-[1,2,4]triazol-3-yl]-benzoic acid (1.67 g, 4.2 mmol), diphenylphosphoryl azide (1.26 g, 4.58 mmol) and triethylamine (0.5 g, 5 mmol) in 10 mL of dry t-BuOH was heated to 75° C. for 90 min, resulting in dissolution of the starting acid and subsequent precipitation of the azide. The cooled solution was then poured onto 10 g of ice, and the resulting mixture was filtered and dried to furnish 0.80 g of the azide as a white solid. 1H NMR (300 MHz, CDCl3) δ 10.1 (s, 1H), 8.65 (s, 1H), 8.40 (d, J=8.4 Hz, 2H), 8.0 (d, J=8.4 Hz, 2H), 7.85 (d, J=9 Hz, 2H), 7.45 (d, J=9 Hz, 2H); ESIMS 399.2 (M+H); mp 175° C. dec.

Sources & evidence

ORD record
ord-c98aa9137cd3439ca0ea4d51d4bdd7b8
Source dataset
uspto-grants-2015_04
Patent number
US09018363B2

Reaction notes

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