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Diisopropylethylamine → N-(5-(2,2-difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)pyridin-2-yl)-2,6-difluorobenzamide

HRID 1036107
Notes
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Reaction equation

HRID 1036107 reaction equation
[F:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]([F:11])[C:3]=1[C:4](Cl)=[O:5].[F:12][C:13]1([F:30])[O:17][C:16]2[CH:18]=[C:19]([CH3:29])[C:20]([C:22]3[CH:23]=[CH:24][C:25]([NH2:28])=[N:26][CH:27]=3)=[CH:21][C:15]=2[O:14]1.CCN(C(C)C)C(C)C>ClCCl.O1CCCC1.CO.[OH-].[Na+]>[F:30][C:13]1([F:12])[O:17][C:16]2[CH:18]=[C:19]([CH3:29])[C:20]([C:22]3[CH:23]=[CH:24][C:25]([NH:28][C:4](=[O:5])[C:3]4[C:2]([F:1])=[CH:10][CH:9]=[CH:8][C:7]=4[F:11])=[N:26][CH:27]=3)=[CH:21][C:15]=2[O:14]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 3

HCID 81531DiisopropylethylamineHCID 874382,6-Difluorobenzoyl chlorideHCID 584866525-(2,2-Difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)pyridin-2-amine

Product 1

HCID 58486781N-(5-(2,2-difluoro-6-methylbenzo[d][1,3]dioxol-5-yl)pyridin-2-yl)-2,6-difluorobenzamideYield 76%

Reagents, catalysts & solvents 4

HCID 887
Methanol
Solvent
HCID 6344DichloromethaneSolvent2×
HCID 8028TetrahydrofuranSolvent
HCID 14798Sodium HydroxideSolvent

Conditions

Temperature
60 °C

Procedure

Under an atmosphere of argon, 2,6-difluorobenzoyl chloride (32 mg, 0.2 mmol) was added to a stirred solution of 4 (24 mg, 0.1 mmol) and Hünig's base (95 μL, 70 mg, 0.5 mmol) in dichloromethane (1.0 mL) at room temperature. The reaction was stirred for 0.5 h. The solution was diluted with tetrahydrofuran (0.6 mL), methanol (0.4 mL) and 2 M sodium hydroxide solution (0.2 mL). The mixture was stirred and heated to 60° C. for 15 min then cooled to room temperature, diluted with dichloromethane (5 mL), dried with sodium sulfate and concentrated under reduced pressure. Flash chromatography (ISCO system, silica, 0-25% ethyl acetate in hexane) provided 5 (27.8 mg, 76%) as a solid: LRESIMS m/z 405.1 [M+H]+, calcd. for C20H13F4N2O3 405.1.

Workup

  1. stirringThe mixture was stirred
  2. temperaturethen cooled to room temperature
  3. dry with materialdried with sodium sulfate
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-ce2f482919a542f399bd9b2b6a8fe3d6
Source dataset
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08546403B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes