Potassium Phosphate, Tribasic → US10023592, Example 291

HRID 575771Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]([O:10][CH:11]([F:13])[F:12])[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1.[F:14][C:15]1[CH:42]=[C:41]([F:43])[CH:40]=[CH:39][C:16]=1[O:17][C:18]1[CH:23]=[CH:22][C:21]([CH2:24][S:25]([CH2:28][CH3:29])(=[O:27])=[O:26])=[CH:20][C:19]=1B1OC(C)(C)C(C)(C)O1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O.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]>[F:12][CH:11]([F:13])[O:10][C:4]1[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=[C:2]([C:19]2[CH:20]=[C:21]([CH2:24][S:25]([CH2:28][CH3:29])(=[O:27])=[O:26])[CH:22]=[CH:23][C:18]=2[O:17][C:16]2[CH:39]=[CH:40][C:41]([F:43])=[CH:42][C:15]=2[F:14])[CH:3]=1

Participants

Conditions

Temperature: 70 °C

Procedure

A mixture of 5-bromo-3-(difluoromethoxy)-1-methylpyridin-2-one (50 mg, 0.20 mmol), 2-[2-(2,4-difluorophenoxy)-5-(ethylsulfonylmethyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (79 mg, 0.18 mmol), Pd(dppf)Cl2 (11 mg) and K3PO4 (76 mg, 0.36 mmol) in dioxane (5 mL) and water (5 drops) was purged with nitrogen, capped, and heated to 70° C. for 8 h. After the mixture was filtered, the filtrate was concentrated in vacuo and purified by prep-HPLC to afford the title compound (21 mg, 22%) as a white solid. 1H NMR (CDCl3, 400 MHz) δ 7.62 (d, J=2.0 Hz, 1H) 7.54 (d, J=2.0 Hz, 1H) 7.40 (d, J=2.0 Hz, 1H) 7.29 (d, J=2.0 Hz, 1H) 7.09-6.96 (m, 3H) 6.93-6.88 (m, 1H) 6.78 (m, 1H) 4.21 (s, 2H) 3.70 (s, 3H) 2.97 (q, J=7.6 Hz, 2H) 1.43 (t, J=7.6 Hz, 3H). LCMS (M+H)+=486.

Workup

customwas purged with nitrogen
customcapped
filtrationAfter the mixture was filtered
concentrationthe filtrate was concentrated in vacuo
custompurified by prep-HPLC

Sources & evidence

ORD record: ord-f21f48878bd441a9a7456001acf84611
Source dataset: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09034900B2

Reaction notes

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