Hydrochloric Acid → HCID 20511278, compound

HRID 1578285Notes

Reaction equation

HRID 1578285 reaction equation
[ClH:1].[OH:2][C:3]1[CH:4]=[C:5]([CH:9]=[CH:10][C:11]=1[OH:12])[CH2:6][CH2:7][NH2:8].C(O[CH:16](OCC)[CH2:17][O:18][C:19]1[CH:24]=[CH:23][N:22]=[CH:21][CH:20]=1)C.Cl>C(O)CCC>[ClH:1].[ClH:1].[N:22]1[CH:23]=[CH:24][C:19]([O:18][CH2:17][CH:16]2[C:9]3[C:5](=[CH:4][C:3]([OH:2])=[C:11]([OH:12])[CH:10]=3)[CH2:6][CH2:7][NH:8]2)=[CH:20][CH:21]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 65340Dopamine HydrochlorideHCID 20511268HCID 20511268, compound

Product 1

HCID 20511278HCID 20511278, compoundYield 215.2%

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent2×

Procedure

A mixture of 3,4-dihydroxyphenethylamine hydrochloride (2.4 g), (4-pyridyl)oxyacetaldehyde diethyl acetal (3.7 g), n-butanol (40 ml) and 1N-hydrochloric acid (20 ml) was refluxed for 15 hours under stirring. After the reaction, n-butanol was distilled off from the reaction mixture under reduced pressure. The residue was dissolved in water, and the solution was washed twice with chloroform and once with ether. The aqueous layer was concentrated, and the oily residue was allowed to stand to give crystals of 1-(4-pyridyl)oxymethyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline dihydrochloride (4.7 g). The product was recrystallized from aqueous methanol to give needles, mp 250° to 255° C. (dec.).

Workup

  1. temperaturewas refluxed for 15 hours
  2. distillationwas distilled off from the reaction mixture under reduced pressure
  3. dissolutionThe residue was dissolved in water
  4. washthe solution was washed twice with chloroform and once with ether
  5. concentrationThe aqueous layer was concentrated

Sources & evidence

ORD record
ord-6a2bcfee270a44bb8c6b4fab7ad644d6
Source dataset
uspto-grants-1981_09
Patent number
US04292320

Reaction notes

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