1-(1-Ethylpiperazin-4-yl)-3-bromoisoquinoline → HCID 22502912, compound

HRID 1251251Notes

Reaction equation

HRID 1251251 reaction equation
[C:1]([O:4][CH2:5][CH2:6][C:7]1([C:13]2[CH:18]=[CH:17][C:16]([Sn](CCCC)(CCCC)CCCC)=[CH:15][CH:14]=2)[CH2:12][CH2:11][O:10][CH2:9][CH2:8]1)(=[O:3])[CH3:2].Br[C:33]1[N:34]=[C:35]([N:43]2[CH2:48][CH2:47][N:46]([CH2:49][CH3:50])[CH2:45][CH2:44]2)[C:36]2[C:41]([CH:42]=1)=[CH:40][CH:39]=[CH:38][CH:37]=2>C1(C)C(C)=CC=CC=1.C(OCC)(=O)C.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>[CH2:49]([N:46]1[CH2:45][CH2:44][N:43]([C:35]2[C:36]3[C:41](=[CH:40][CH:39]=[CH:38][CH:37]=3)[CH:42]=[C:33]([C:16]3[CH:15]=[CH:14][C:13]([C:7]4([CH2:6][CH2:5][O:4][C:1](=[O:3])[CH3:2])[CH2:8][CH2:9][O:10][CH2:11][CH2:12]4)=[CH:18][CH:17]=3)[N:34]=2)[CH2:48][CH2:47]1)[CH3:50]

Participants

6

Reactant 2

HCID 225024471-(1-Ethylpiperazin-4-yl)-3-bromoisoquinolineHCID 22503103HCID 22503103, compound

Product 1

HCID 22502912HCID 22502912, compoundYield 90.2%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 7237O-XyleneSolventHCID 8857Ethyl AcetateSolvent

Procedure

4-(2-Acetoxyethyl)-4-(4-tributylstannylphenyl)tetrahydropyran (2.20 g) and 3-bromo-1-(4-ethylpiperazin-1-yl)isoquinoline (0.83 g) were heated under reflux overnight in the presence of tetrakistriphenylphosphinepalladium(0) (0.12 g) in xylene in nitrogen atmosphere. After cooling, the reaction solution was diluted with ethyl acetate and filtered. The filtrate was extracted with 2N hydrochloric acid, and the resulting aqueous layer was washed with ethyl acetate, adjusted to pH 10 with a 8N aqueous solution of sodium hydroxide, and then extracted with ethyl acetate. The extract was washed with a 10% sodium carbonate and brine, and dried over magnesium sulfate. The solvent was evaporated, to give a mixture (1.14 g) of 1-(4-ethylpiperazin-1-yl)-3-{4-[4-(2-acetoxyethyl)tetrahydropyran-4-yl]phenyl}isoquinoline as a brown viscous oil and the starting material.

Workup

  1. temperatureAfter cooling
  2. filtrationfiltered
  3. extractionThe filtrate was extracted with 2N hydrochloric acid
  4. washthe resulting aqueous layer was washed with ethyl acetate
  5. extractionextracted with ethyl acetate
  6. washThe extract was washed with a 10% sodium carbonate and brine
  7. dry with materialdried over magnesium sulfate
  8. customThe solvent was evaporated

Sources & evidence

ORD record
ord-b86c538fc3ad4ec489f5b4dabc081d04
Source dataset
uspto-grants-2002_01
Patent number
US06340759B1

Reaction notes

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