Sodium Carbonate → HCID 14710237, compound

HRID 507627Notes

Reaction equation

Br[C:2]1[CH:6]=[CH:5][S:4][C:3]=1[C:7](=[O:9])[CH3:8].[CH3:10][O:11][C:12]1[CH:17]=[CH:16][C:15](B(O)O)=[CH:14][CH:13]=1.C([O-])([O-])=O.[Na+].[Na+]>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.C(COC)OC>[CH3:10][O:11][C:12]1[CH:17]=[CH:16][C:15]([C:2]2[CH:6]=[CH:5][S:4][C:3]=2[C:7](=[O:9])[CH3:8])=[CH:14][CH:13]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A flask was charged with 1-(3-bromothiophen-2-yl)ethanone (1.00 g, 4.88 mmol), 4-methoxyphenylboronic acid (0.740 g, 4.88 mmol), tetrakis(triphenylphosphine)palladium(0) (0.17 g, 0.15 mmol), dimethoxyethane (50 mL), and 2 N aqueous Na2CO3 (7.3 mL) and then warmed to 80° C. for 7 h. At that time the reaction mixture was poured into H20 and extracted with EtOAc. The organic phase was separated and washed with brine, dried over Na2SO4 and concentrated in vacuo. The resulting residue was purified via flash chromatography, eluting with 5-15% EtOAc/hexanes to afford the product (0.50 g, 2.2 mmol). MS (M+H)+ 233.

Workup

additionAt that time the reaction mixture was poured into H20
extractionextracted with EtOAc
customThe organic phase was separated
washwashed with brine
dry with materialdried over Na2SO4
concentrationconcentrated in vacuo
customThe resulting residue was purified via flash chromatography
washeluting with 5-15% EtOAc/hexanes

Sources & evidence

ORD record: ord-968b5d0485984d9f8109975071a1ffc3
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07786132B2

Reaction notes

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