Triethylamine → (E)-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)but-2-enoyl azide

HRID 1772430Notes

Reaction equation

HRID 1772430 reaction equation
[F:1][C:2]([F:28])([F:27])[O:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18](/[C:21](/[CH3:26])=[CH:22]/[C:23]([OH:25])=O)=[CH:17][CH:16]=3)=[N:11]2)=[CH:6][CH:5]=1.C(N(CC)CC)C.P([N:52]=[N+:53]=[N-:54])(=O)(OC1C=CC=CC=1)OC1C=CC=CC=1>C(O)(C)C>[F:1][C:2]([F:28])([F:27])[O:3][C:4]1[CH:5]=[CH:6][C:7]([N:10]2[CH:14]=[N:13][C:12]([C:15]3[CH:20]=[CH:19][C:18](/[C:21](/[CH3:26])=[CH:22]/[C:23]([N:52]=[N+:53]=[N-:54])=[O:25])=[CH:17][CH:16]=3)=[N:11]2)=[CH:8][CH:9]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 123414Diphenylphosphoryl azideHCID 131732835HCID 131732835, compound

Product 1

HCID 90404286(E)-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)but-2-enoyl azideYield 80.6%

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Procedure

To (E)-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)but-2-enoic acid (C28) (1.14 g, 2.93 mmol) in isopropanol (9.8 mL) was added triethylamine (0.53 mL, 3.81 mmol) and diphenyl phosphorazidate (0.68 mL, 3.23 mmol). The reaction was stirred at room temperature overnight. The white precipitate was vacuum-filtered and dried in a vacuum oven to afford the title compound as a white solid (0.978 g, 80%): 1H NMR (400 MHz, CDCl3) δ 8.59 (s, 1H), 8.25-8.19 (m, 2H), 7.85-7.78 (m, 2H), 7.65-7.58 (m, 2H), 7.44-7.37 (m, 2H), 6.16 (d, J=1.3 Hz, 1H), 2.68 (d, J=1.2 Hz, 3H); 19F NMR (376 MHz, CDCl3) δ −58.02; ESIMS m/z 387 ([M+H]+) (isocyanate).

Workup

  1. filtrationThe white precipitate was vacuum-filtered
  2. customdried in a vacuum oven

Sources & evidence

ORD record
ord-8911607679ae4170b7eb26271789a4ac
Source dataset
uspto-grants-2016_02
Patent number
US09249133B2

Reaction notes

Loading…