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Tetrahydrofuran → {5-[4-(4-Methoxyphenyl)piperazin-1-yl]-2,4,6,7-tetramethyl-2,3-dihydro-1-benzofuran-2-yl}methyl methanesulfonate

HRID 2063925
Notes
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Reaction equation

HRID 2063925 reaction equation
C1COCC1.[CH3:6][O:7][C:8]1[CH:13]=[CH:12][C:11]([N:14]2[CH2:19][CH2:18][N:17]([C:20]3[C:21]([CH3:34])=[C:22]([CH3:33])[C:23]4[O:27][C:26]([CH2:29][OH:30])([CH3:28])[CH2:25][C:24]=4[C:31]=3[CH3:32])[CH2:16][CH2:15]2)=[CH:10][CH:9]=1.C(N(CC)CC)C.[CH3:42][S:43](Cl)(=[O:45])=[O:44]>O.C(OCC)(=O)C>[CH3:42][S:43]([O:30][CH2:29][C:26]1([CH3:28])[CH2:25][C:24]2[C:31]([CH3:32])=[C:20]([N:17]3[CH2:16][CH2:15][N:14]([C:11]4[CH:10]=[CH:9][C:8]([O:7][CH3:6])=[CH:13][CH:12]=4)[CH2:19][CH2:18]3)[C:21]([CH3:34])=[C:22]([CH3:33])[C:23]=2[O:27]1)(=[O:45])=[O:44]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 8028TetrahydrofuranHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 46910479{5-[4-(4-Methoxyphenyl)piperazin-1-yl]-2,4,6,7-tetramethyl-2,3-dihydro-1-benzofuran-2-yl}methanol

Product 1

HCID 59485125{5-[4-(4-Methoxyphenyl)piperazin-1-yl]-2,4,6,7-tetramethyl-2,3-dihydro-1-benzofuran-2-yl}methyl methanesulfonate
Yield 92%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of THF (2.0 mL) containing {5-[4-(4-Methoxyphenyl)piperazin-1-yl]-2,4,6,7-tetramethyl-2,3-dihydro-1-benzofuran-2-yl}methanol (200 mg, 0.504 mmol) synthesized in Example 97, triethylamine (102 mg, 1.01 mmol) and methanesulfonyl chloride (87 mg, 0.756 mmol) were serially added under ice-cooling condition, and the mixture was warmed to room temperature and stirred for 15 hours. The reaction solution was diluted with water, and extraction was performed using ethyl acetate. The extract was washed with saturated saline and dried using anhydrous magnesium sulfate. After that, the solvent was removed under reduced pressure. The obtained residue was purified by silica gel chromatography (hexane-ethyl acetate 95:5-75:25) to give 220 mg of the title compound (yield: 92%). An amorphous solid.

Workup

  1. additionwere serially added under ice-
  2. temperaturecooling condition
  3. washThe extract was washed with saturated saline
  4. customdried
  5. customAfter that, the solvent was removed under reduced pressure
  6. customThe obtained residue was purified by silica gel chromatography (hexane-ethyl acetate 95:5-75:25)

Sources & evidence

ORD record
ord-ccefe973f21f4de88d7a010479b1371e
Source dataset
uspto-grants-2012_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08288390B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes