Hydrochloric Acid → HCID 11482946, compound

HRID 1950605Notes

Reaction equation

HRID 1950605 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[C:11]([O:13]C)[CH:12]=1)[C:9](=O)[CH:8]([C:16]1[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][CH:17]=1)[CH2:7][CH2:6]2.OC1C=C(OC)C=C2C=1C(=O)C(C1C=CC(OC)=CC=1)CC2.[BH4-].[Li+].Cl>O1CCCC1>[CH3:1][O:2][C:3]1[CH:12]=[C:11]([OH:13])[C:10]2[CH:9]=[C:8]([C:16]3[CH:17]=[CH:18][C:19]([O:22][CH3:23])=[CH:20][CH:21]=3)[CH2:7][CH2:6][C:5]=2[CH:4]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 4148881Lithium borohydrideHCID 11381397HCID 11381397, compoundHCID 11392358HCID 11392358, compound

Product 1

HCID 11482946HCID 11482946, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

Synthesized from 6,8-dimethoxy-2-(4-methoxyphenyl)-3,4-dihydro-2H-naphthalen-1-one according to an analogous synthetic method to Preparation Example 192 described below, a solution of 8-hydroxy-6-methoxy-2-(4-methoxyphenyl)-3,4-dihydro-2H-naphthalen-1-one (6.2 g) in tetrahydrofuran (130 ml) was added dropwise to a suspension of lithium borohydride (1.1 g) in tetrahydrofuran (60 ml) on an ice bath, and the solution was stirred for 20 minutes at room temperature. To the reaction solution was added 2N hydrochloric acid on the ice bath, the solution was stirred, extracted with ethyl acetate, then washed with brine, dried over anhydrous magnesium sulfate, and then the solvent was evaporated in vacuo. The residue was purified by silica gel column chromatography (hexane-tetrahydrofuran system) to provide the title compound (5.6 g).

Workup

  1. stirringthe solution was stirred
  2. extractionextracted with ethyl acetate
  3. washwashed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was evaporated in vacuo
  6. customThe residue was purified by silica gel column chromatography (hexane-tetrahydrofuran system)

Sources & evidence

ORD record
ord-52db288ecfed42a5b15bc92708c64a99
Source dataset
uspto-grants-2013_03
Patent number
US08399520B2

Reaction notes

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