3-(Tributylstannanyl)pyridazine → 6-[2-(4-Cyclobutylpiperazin-1-Yl)-2-Oxoethyl]-2-Pyridazin-3-Yl-5,6,7,8-Tetrahydro-1,6-Naphthyridine

HRID 1713124Notes

Reaction equation

HRID 1713124 reaction equation
Cl[C:2]1[CH:11]=[CH:10][C:9]2[CH2:8][N:7]([CH2:12][C:13]([N:15]3[CH2:20][CH2:19][N:18]([CH:21]4[CH2:24][CH2:23][CH2:22]4)[CH2:17][CH2:16]3)=[O:14])[CH2:6][CH2:5][C:4]=2[N:3]=1.C([Sn](CCCC)(CCCC)[C:30]1[N:31]=[N:32][CH:33]=[CH:34][CH:35]=1)CCC>C1(C)C=CC=CC=1.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>[CH:21]1([N:18]2[CH2:19][CH2:20][N:15]([C:13](=[O:14])[CH2:12][N:7]3[CH2:6][CH2:5][C:4]4[N:3]=[C:2]([C:30]5[N:31]=[N:32][CH:33]=[CH:34][CH:35]=5)[CH:11]=[CH:10][C:9]=4[CH2:8]3)[CH2:16][CH2:17]2)[CH2:24][CH2:23][CH2:22]1

Participants

5

Reactant 2

HCID 27632603-(Tributylstannanyl)pyridazineHCID 574205742-Chloro-6-[2-(4-cyclobutylpiperazin-1-yl)-2-oxoethyl]-5,6,7,8-tetrahydro-1,6-naphthyridine

Product 1

HCID 574205756-[2-(4-Cyclobutylpiperazin-1-Yl)-2-Oxoethyl]-2-Pyridazin-3-Yl-5,6,7,8-Tetrahydro-1,6-Naphthyridine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 2-chloro-6-[2-(4-cyclobutylpiperazin-1-yl)-2-oxoethyl]-5,6,7,8-tetrahydro-1,6-naphthyridine (349 mg, 1 mmol), 3-(tributylstannyl)pyridazine (461 mg, 1.25 mmol) and Pd(PPh3)4 (116 mg, 0.1 mmol) in toluene (15 mL) is degassed by argon and heated at 110° C. in a sealed tube overnight. The mixture is cooled and saturated KF solution (10 mL) is added. The mixture is stirred at rt for 30 min, and then the layers are separated. The aqueous layer is extracted with EtOAc (15 ml) and the combined extracts are dried and evaporated. The residue is purified by PTLC to give the title compound as a white solid. MS (M+1): 393.2; 1H NMR (δ, CDCl3): 9.77 (m, 1H), 9.26 (dd, 1H), 8.05 (dd, 1H), 7.64 (d, 1H), 7.48 (d, 1H), 3.79 (s, 2H), 3.65 (q, 4H), 3.43 (s, 2H), 3.13 (t, 2H), 2.96 (t, 2H), 2.64-2.74 (m, 1H), 2.30 (q, 4H), 1.64-2.06 (m, 6H).

Workup

  1. customis degassed by argon
  2. temperatureThe mixture is cooled
  3. additionsaturated KF solution (10 mL) is added
  4. customthe layers are separated
  5. extractionThe aqueous layer is extracted with EtOAc (15 ml)
  6. customthe combined extracts are dried
  7. customevaporated
  8. customThe residue is purified by PTLC

Sources & evidence

ORD record
ord-496a62aa26624656bd911e22df75877a
Source dataset
uspto-grants-2010_09
Patent number
US07795262B2

Reaction notes

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