4-(Trifluoromethyl)phenylboronic acid → 8-(4-Trifluoromethyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine

HRID 472327Notes

Reaction equation

HRID 472327 reaction equation
Br[C:2]1[C:3]2[N:4]([N:8]=[C:9]([NH2:11])[N:10]=2)[CH:5]=[CH:6][CH:7]=1.[F:12][C:13]([F:24])([F:23])[C:14]1[CH:19]=[CH:18][C:17](B(O)O)=[CH:16][CH:15]=1>>[F:12][C:13]([F:24])([F:23])[C:14]1[CH:19]=[CH:18][C:17]([C:2]2[C:3]3[N:4]([N:8]=[C:9]([NH2:11])[N:10]=3)[CH:5]=[CH:6][CH:7]=2)=[CH:16][CH:15]=1

Participants

3

Reactant 2

HCID 27343894-(Trifluoromethyl)phenylboronic acidHCID 468640698-Bromo-(1,2,4)triazolo(1,5-a)pyridin-2-amine

Product 1

HCID 575140908-(4-Trifluoromethyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine

Procedure

8-(4-Trifluoromethyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine was prepared from 8-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (504.7 mg, 2.369 mmol) and (4-trifluoromethylphenyl)boronic acid (500.0 mg, 2.632 mmol) in a manner analogous to Step 2c. The reaction product was isolated as a yellow solid (0.64 g, 97%). MP=186-187° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 8.62 (d, J=6.3 Hz, 1H), 8.34 (d, J=8.0 Hz, 2H), 7.88-7.80 (m, 3H), 7.02 (t, J=6.8 Hz, 1H), 6.18 (s, 2H). MS=279 (MH)+.

Sources & evidence

ORD record
ord-f6fe9131c7d3461cb391898bd252eaeb
Source dataset
uspto-grants-2014_01
Patent number
US08633173B2

Reaction notes

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