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Potassium Phosphate, Tribasic → (2,6-difluorophenyl)-N-[5-(2,2-difluoro-6-methylbenzo[d]1,3-dioxolen-5-yl)(1,3-thiazol-2-yl)]carboxamide

HRID 1524249
Notes
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Reaction equation

HRID 1524249 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]([NH:11][C:12]1[S:13][C:14](Br)=[CH:15][N:16]=1)=[O:10].[F:18][C:19]1([F:38])[O:23][C:22]2[CH:24]=[C:25]([CH3:37])[C:26](B3OC(C)(C)C(C)(C)O3)=[CH:27][C:21]=2[O:20]1.[O-]P([O-])([O-])=O.[K+].[K+].[K+]>C(#N)C.O1CCOCC1.O.C(OCC)(=O)C>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]([NH:11][C:12]1[S:13][C:14]([C:26]2[C:25]([CH3:37])=[CH:24][C:22]3[O:23][C:19]([F:18])([F:38])[O:20][C:21]=3[CH:27]=2)=[CH:15][N:16]=1)=[O:10]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 54918070N-(5-bromo(1,3-thiazol-2-yl))(2,6-difluorophenyl)carboxamideHCID 584872352-(2,2-Difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

Product 1

HCID 56848444(2,6-difluorophenyl)-N-[5-(2,2-difluoro-6-methylbenzo[d]1,3-dioxolen-5-yl)(1,3-thiazol-2-yl)]carboxamideYield 9%

Reagents, catalysts & solvents 4

HCID 962WaterSolventHCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
85 °C

Procedure

Argon was bubbled through a mixture of (2,6-difluorophenyl)-N-(5-bromo(1,3-thiazol-2-yl))carboxamide (152) (64 mg, 0.2 mmol), 2-(2,2-difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (489 mg, 0.3 mmol), bis(ditertbutyl(4-dimethylaminophenyl)phosphine)dichloropalladium (II) (21 mg, 10% mol) and K3PO4 (64 mg) in 1 mL ACN, 1 mL dioxane, 0.5 ml H2O. The reaction mixture was heated at 85° C. for 7 h. After cooling to room temperature, the reaction mixture was taken up in ethyl acetate, washed with aqueous NaHCO3 and brine. The organic phase was dried over (Na2SO4), concentrated and then subjected to prep HPLC chromatography to give (2,6-difluorophenyl)-N-[5-(2,2-difluoro-6-methylbenzo[d]1,3-dioxolen-5-yl)(1,3-thiazol-2-yl)]carboxamide (153) (7.4 mg, yield: 9%, purity>95%) as white solid. LC-MS: calcd. for C18H10F4N2O3S: 411 (M+1).

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with aqueous NaHCO3 and brine
  3. dry with materialThe organic phase was dried over (Na2SO4)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-0bfb80ed5abe41fc8e28c96793a0f59a
Source dataset
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09079891B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes