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4-(Methylthio)phenylboronic acid → HCID 23450971, compound

HRID 1598826
Notes
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Reaction equation

HRID 1598826 reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]1[CH:13]=[CH:12][C:11]([F:14])=[CH:10][CH:9]=1.[CH3:15][S:16][C:17]1[CH:22]=[CH:21][C:20](B(O)O)=[CH:19][CH:18]=1>C1(C)C=CC=CC=1.C(O)C.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>[F:14][C:11]1[CH:12]=[CH:13][C:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[C:20]2[CH:21]=[CH:22][C:17]([S:16][CH3:15])=[CH:18][CH:19]=2)=[CH:9][CH:10]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 2

HCID 27339594-(Methylthio)phenylboronic acidHCID 132706302-Bromo-4'-fluoro-1,1'-biphenyl

Product 1

HCID 23450971HCID 23450971, compoundYield 93.4%

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolvent
HCID 1140
Toluene
Solvent
HCID 10340Sodium CarbonateSolvent

Procedure

Under nitrogen, 200 mg of Pd(PPh3)4 was added to a stirred solution of 500 mg (2.0 mmol) of 1-bromo-2-(4-fluorophenyl)benzene (Step 1) and 500 mg (3.0 mmol) of 4-methylthiophenylboronic acid (Step 2) in 7 mL of toluene, 7 mL of ethanol and 7 mL of 2M Na2CO3. After vigorous stirring at reflux overnight, the solvent was removed in vacuo. The residue was dissolved in ethyl acetate. The resulting solution was washed with water and dried over MgSO4. Purification by silica gel chromatography (Waters LC-2000) with ethyl acetate/hexane (2:98) as the eluent gave 550 mg of 1-(4-fluorophenyl)-2-[4-(methylthio)phenyl]benzene as a semi-solid: NMR (CDCl3) δ 2.46 (s, 3H), 6.92 (t, J=8 Hz, 2H), 7.02-7.14 (m, 6H) 7.37-7.42 (m, 4H). MS (EI): m/e (rel intensity) 294 (100), 279 (39), 277 (56), 246 (74), 227 (40), 190 (43) 190 (38), 140 (44).

Workup

  1. temperatureat reflux overnight
  2. customthe solvent was removed in vacuo
  3. dissolutionThe residue was dissolved in ethyl acetate
  4. washThe resulting solution was washed with water
  5. dry with materialdried over MgSO4
  6. customPurification by silica gel chromatography (Waters LC-2000) with ethyl acetate/hexane (2:98) as the eluent

Sources & evidence

ORD record
ord-ba85dcf4781e4c20ab4a085efa3bbf0d
Source dataset
uspto-grants-1998_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05739166

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes