Phenylboronic Acid → (2-Methoxy-phenyl)-(8-phenyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-amine

HRID 472275Notes

Reaction equation

HRID 472275 reaction equation
Br[C:2]1[C:3]2[N:4]([N:8]=[C:9]([NH:11][C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[O:18][CH3:19])[N:10]=2)[CH:5]=[CH:6][CH:7]=1.[C:20]1(B(O)O)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:19][O:18][C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][C:12]=1[NH:11][C:9]1[N:10]=[C:3]2[C:2]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)=[CH:7][CH:6]=[CH:5][N:4]2[N:8]=1

Participants

4

Reactant 2

HCID 66827Phenylboronic AcidHCID 67481519(8-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-(2-methoxy-phenyl)-amine

Product 1

HCID 67478857(2-Methoxy-phenyl)-(8-phenyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-amine

Reagents, catalysts & solvents 1

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)Catalyst

Procedure

(2-Methoxy-phenyl)-(8-phenyl-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-amine was prepared from (8-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-(2-methoxy-phenyl)-amine (50.0 mg, 0.157 mmol) and phenylboronic acid (21.0 mg, 0.172 mmol) with Pd(dppf)Cl2 (0.012 g) as the catalyst in a manner analogous to Step 2c and was isolated as a white solid (0.012 g, 24%). MP=155-157° C. 1H NMR (400 MHz, CDCl3, δ, ppm): 8.44 (dd, J=6.6, 0.9 Hz, 1H), 8.40 (dd, J=8.0, 1.4 Hz, 1H), 8.02-7.97 (m, 2H), 7.61 (s, 1H), 7.56 (dd, J=7.4, 0.9 Hz, 1H), 7.55-7.50 (m, 2H), 7.45-7.40 (m, 1H), 7.07-7.02 (m, 1H), 6.98-6.88 (m, 3H), 3.91 (s, 3H). MS=317 (MH)+.

Sources & evidence

ORD record
ord-1e193c1320df4c0ebc638b17722261e4
Source dataset
uspto-grants-2014_01
Patent number
US08633173B2

Reaction notes

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