Triethylamine → HCID 902040, compound

HRID 2245672Notes

Reaction equation

HRID 2245672 reaction equation
[Cl:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=O)=[CH:4][N:3]=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N2CCCC2)(N2CCCC2)N2CCCC2)C2C=CC=CC=2N=N1.[CH3:44][N:45]1[CH2:50][CH2:49][NH:48][CH2:47][CH2:46]1.C(N(CC)CC)C>CN(C)C=O>[Cl:1][C:2]1[N:3]=[CH:4][C:5]([C:6]([N:48]2[CH2:49][CH2:50][N:45]([CH3:44])[CH2:46][CH2:47]2)=[O:8])=[CH:9][CH:10]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 531671-MethylpiperazineHCID 792226-Chloronicotinic acidHCID 2724699PyBOP

Product 1

HCID 902040HCID 902040, compoundYield 49.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 6-Chloro-nicotinic acid (3.00 g, 19.0 mmol) in 30 mL dimethylformamide was added (benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (10.9 g, 20.9 mmol), 1-methylpiperazine (2.30 g, 22.1 mmol) and triethylamine (2.18 g, 21.5 mmol). After stirring for 18 hours, this was partitioned between ethyl acetate and water. The ethylacetate layer was dried over anhydrous sodium sulfate, concentrated in vacuo, and purified by flash chromatography (elution with 3% methanol/dichloromethane) to yield (6-Chloro-pyridin-3-yl)-(4-methyl-piperazin-1-yl)-methanone (2.50 g, 9.33 mmol).

Workup

  1. customthis was partitioned between ethyl acetate and water
  2. dry with materialThe ethylacetate layer was dried over anhydrous sodium sulfate
  3. concentrationconcentrated in vacuo
  4. custompurified by flash chromatography (elution with 3% methanol/dichloromethane)

Sources & evidence

ORD record
ord-de5fef9ca00d476fa6018e2485e85eb7
Source dataset
uspto-grants-2010_03
Patent number
US07683064B2

Reaction notes

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