(Pyridin-4-yl)boronic acid → HCID 57502372, compound

HRID 1889738Notes

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.[N:12]1[CH:17]=[CH:16][C:15](B(O)O)=[CH:14][CH:13]=1>>[N:12]1[CH:17]=[CH:16][C:15]([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:14][CH:13]=1

Participants

Reactant 2

HCID 2734379(Pyridin-4-yl)boronic acid

HCID 468640698-Bromo-(1,2,4)triazolo(1,5-a)pyridin-2-amine

Product 1

HCID 57502372HCID 57502372, compound

Procedure

8-Pyridin-4-yl-[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 (1.0 g, 4.7 mmol) and 4-pyridylboronic acid (0.81 g, 6.6 mmol) in a manner analogous to Step 2c. The product of the reaction was isolated as a pale yellow solid (0.54 g, 54%). MP=209-215° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 8.69 (dd, J=4.8, 1.4 Hz, 2H), 8.65 (dd, J=6.5, 0.8 Hz, 1H), 8.18 (dd, J=4.7, 1.6 Hz, 2H), 7.94 (dd, J=7.5, 0.9 Hz, 1H), 7.03 (t, J=6.8 Hz, 1H), 6.24 (s, 2H). MS=212 (MH)+. 11b) (4-Morpholin-4-yl-phenyl)-(8-pyridin-4-yl-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-amine was prepared from 8-Pyridin-4-yl-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (100.0 mg, 0.4734 mmol) and 4-(4-Bromo-phenyl)-morpholine (160.0 mg, 0.6608 mmol) in an anlogous manner to Step 2d. The title compound was isolated as yellow solid (0.035 g, 20%). MP=266-270° C. 1H NMR (400 MHz, CDCl3, δ, ppm): 9.54 (s, 1H), 8.86 (d, J=6.5 Hz, 1H), 8.75-8.70 (m, 2H), 8.23-8.20 (m, 2H), 8.04 (d, J=7.3 Hz, 1H), 7.62-7.57 (m, 2H), 7.14 (t, J=7.0 Hz, 1H), 6.96-6.90 (m, 2H), 3.76-3.72 (m, 4H), 3.05-3.00 (m, 4H). MS=373 (MH)+.

Sources & evidence

ORD record: ord-2c4c74b297c842248919ce91519e428d
Source dataset: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08501936B2

Reaction notes

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