Dichloromethane → N-tert-Butyl-3'-fluoro-4'-[1,2,4]triazolo[4,3-a]pyridin-7-ylbiphenyl-2-sulfonamide

HRID 1523953Notes

Reaction equation

[C:1]([NH:5][S:6]([C:9]1[C:10]([C:15]2[CH:20]=[CH:19][C:18](B3OC(C)(C)C(C)(C)O3)=[C:17]([F:30])[CH:16]=2)=[CH:11][CH:12]=[CH:13][CH:14]=1)(=[O:8])=[O:7])([CH3:4])([CH3:3])[CH3:2].Br[C:32]1[CH:37]=[CH:36][N:35]2[CH:38]=[N:39][N:40]=[C:34]2[CH:33]=1.C(Cl)Cl>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]>[C:1]([NH:5][S:6]([C:9]1[C:10]([C:15]2[CH:20]=[CH:19][C:18]([C:32]3[CH:37]=[CH:36][N:35]4[CH:38]=[N:39][N:40]=[C:34]4[CH:33]=3)=[C:17]([F:30])[CH:16]=2)=[CH:11][CH:12]=[CH:13][CH:14]=1)(=[O:7])=[O:8])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 80 °C

Procedure

To a 20 mL vial were added N-(tert-butyl)-3′-fluoro-4′-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,1′-biphenyl]-2-sulfonamide (45 mg, 0.10 mmol), 7-bromo-[1,2,4]triazolo[4,3-a]pyridine (21 mg, 0.10 mmol) K2CO3 (29 mg, 0.21 mmol), Pd(dppf)Cl2.CH2Cl2 (4 mg, 0.005 mmol), and a stir bar. The vial was sealed with a teflon lined cap and the vial sparged with N2. The vial was then charged with freshly sparged DMSO (2 mL) and stirred for 16 hours at 80° Celsius. The reaction mixture was then cooled to rt, filtered, and purified by HPLC to give the title compound (30 mg, 53%). MS (ESI): mass calcd. for C22H21FN4O2S, 424.14; m/z found, 425.1 [M+H]+. 1H NMR (400 MHz, CD3OD) δ 9.40 (s, 1H), 8.79 (s, 1H), 8.20-8.11 (m, 2H), 7.77 (m, 1H), 7.70-7.57 (m, 3H), 7.47-7.38 (m, 3H), 1.10 (s, 9H).

Workup

customlined cap
customthe vial sparged with N2
additionThe vial was then charged with freshly sparged DMSO (2 mL)
temperatureThe reaction mixture was then cooled to rt
filtrationfiltered
custompurified by HPLC

Sources & evidence

ORD record: ord-ffd4634f4862426ab58277147e4e2284
Source dataset: uspto-grants-2015_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09079866B2

Reaction notes

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