Sodium Carbonate → HCID 22350273, compound

HRID 2301871Notes

Reaction equation

HRID 2301871 reaction equation
C([O-])([O-])=O.[Na+].[Na+].[CH2:7]([O:9][C:10]([C:12]1[S:16][C:15](Br)=[N:14][CH:13]=1)=[O:11])[CH3:8].[F:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=1B(O)O>COCCOC.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=1[C:15]1[S:16][C:12]([C:10]([O:9][CH2:7][CH3:8])=[O:11])=[CH:13][N:14]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 27343542-Fluorophenylboronic acidHCID 3614103Ethyl 2-bromothiazole-5-carboxylate

Product 1

HCID 22350273HCID 22350273, compoundYield 37%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

Tetrakis(triphenylphosphine)palladium(0) (0.58 g, 0.5 mmol), and a degassed solution of 2.0M Na2CO3 (10 mL) are added to a degassed solution of 2-bromo-1,3-thiazole-5-carboxylic ethyl ester (1.18 g, 5.0 mmol) and 2-fluorophenylboronic acid (0.77 g, 5.5 mmol) in DME (10 mL). The resulting suspension is stirred under argon at 80° C. for 4 hours. The reaction mixture is cooled, diluted with EtOAc, and then washed with two portions of 1.0 M NaOH, then one portion of brine. The combined organic phases are concentrated in vacuo, and the resulting oil purified with flash chromatography. Yield 37%. HRMS (FAB) calculated for C12H10FNO2S+H 252.0495, found 252.0496.

Workup

  1. temperatureThe reaction mixture is cooled
  2. washwashed with two portions of 1.0 M NaOH
  3. concentrationThe combined organic phases are concentrated in vacuo
  4. customthe resulting oil purified with flash chromatography

Sources & evidence

ORD record
ord-f4646ad35c214f76866fdb910a631e91
Source dataset
uspto-grants-2002_12
Patent number
US06500840B2

Reaction notes

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