Ethyl Acetate → 5-Methyl-5-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-5,11-dihydro-chromeno[4,3-c]chromene-2,8-diol

HRID 2055038Notes

Reaction equation

HRID 2055038 reaction equation
C([Si](C)(C)[O:6][C:7]1[CH:8]=[CH:9][C:10]2[C:11]3[C:24]([C:26]4[CH:39]=[CH:38][C:29]([O:30][CH2:31][CH2:32][N:33]5[CH2:37][CH2:36][CH2:35][CH2:34]5)=[CH:28][CH:27]=4)([CH3:25])[O:23][C:22]4[CH:21]=[C:20]([O:40][Si](C(C)(C)C)(C)C)[CH:19]=[CH:18][C:17]=4[C:12]=3[CH2:13][O:14][C:15]=2[CH:16]=1)(C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC.[NH4+].[Cl-].C(OCC)(=O)C>C1COCC1>[CH3:25][C:24]1([C:26]2[CH:39]=[CH:38][C:29]([O:30][CH2:31][CH2:32][N:33]3[CH2:37][CH2:36][CH2:35][CH2:34]3)=[CH:28][CH:27]=2)[C:11]2[C:10]3[CH:9]=[CH:8][C:7]([OH:6])=[CH:16][C:15]=3[O:14][CH2:13][C:12]=2[C:17]2[CH:18]=[CH:19][C:20]([OH:40])=[CH:21][C:22]=2[O:23]1

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 25517Ammonium ChlorideHCID 2724141Tetrabutylammonium FluorideHCID 219592841-(2-{4-[2,8-Bis-(tert-butyl-dimethyl-silyloxy)-5-methyl-5,11-dihydro-chromeno[4,3-c]chromen-5-yl]-phenoxy}-ethyl)-pyrrolidine

Product 1

HCID 219591455-Methyl-5-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-5,11-dihydro-chromeno[4,3-c]chromene-2,8-diol

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 1-(2-{4-[2,8-bis-(tert-butyl-dimethyl-silyloxy)-5-methyl-5,11-dihydro-chromeno[4,3-c]chromen-5-yl]-phenoxy)ethyl)-pyrrolidine (84.5 mg, 0.12 mmol) in THF (7 mL) was added tetrabutylammonium fluoride (1M in THF, 241.4 μL, 0.24 mmol). The mixture was stirred at room temperature for 40 min. Saturated NH4Cl was added followed by addition of ethyl acetate. The resulting layers were separated, the organic layer was washed with brine, and dried over MgSO4. The solvent was evaporated and the residue dried under vacuum for 2 h at room temperature to yield the title compound which was carried on to the next step without further purification.

Workup

  1. customThe resulting layers were separated
  2. washthe organic layer was washed with brine
  3. dry with materialdried over MgSO4
  4. customThe solvent was evaporated
  5. customthe residue dried under vacuum for 2 h at room temperature

Sources & evidence

ORD record
ord-9482f4acda904a0d8dd2b5f6f7df6ccb
Source dataset
uspto-grants-2008_02
Patent number
US07329654B2

Reaction notes

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