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

HRID 1713157Notes

Reaction equation

HRID 1713157 reaction equation
Br[C:2]1[S:3][C:4]2[CH2:5][N:6]([CH2:11][C:12]([N:14]3[CH2:19][CH2:18][N:17]([CH:20]4[CH2:23][CH2:22][CH2:21]4)[CH2:16][CH2:15]3)=[O:13])[CH2:7][CH2:8][C:9]=2[N:10]=1.C([Sn](CCCC)(CCCC)[C:29]1[N:30]=[N:31][CH:32]=[CH:33][CH:34]=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:20]1([N:17]2[CH2:18][CH2:19][N:14]([C:12](=[O:13])[CH2:11][N:6]3[CH2:7][CH2:8][C:9]4[N:10]=[C:2]([C:29]5[N:30]=[N:31][CH:32]=[CH:33][CH:34]=5)[S:3][C:4]=4[CH2:5]3)[CH2:15][CH2:16]2)[CH2:23][CH2:22][CH2:21]1

Participants

5

Reactant 2

HCID 27632603-(Tributylstannanyl)pyridazineHCID 574205862-Bromo-5-[2-(4-cyclobutylpiperazin-1-yl)-2-oxoethyl]-4,5,6,7-tetrahydro[1,3]thiazolo[5,4-c]pyridine

Product 1

HCID 574207635-[2-(4-Cyclobutylpiperazin-1-Yl)-2-Oxoethyl]-2-Pyridazin-3-Yl-4,5,6,7-Tetrahydro[1,3]Thiazolo[5,4-C]Pyridine

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 1140TolueneSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 2-bromo-5-[2-(4-cyclobutylpiperazin-1-yl)-2-oxoethyl]-4,5,6,7-tetrahydro[1,3]thiazolo[5,4-c]pyridine (300 mg, 0.75 mmol), 3-(tributylstannyl)pyridazine (369 mg, 1 mmol) and Pd(PPh3)4 (92 mg, 0.08 mmol) in toluene (15 mL) is degassed by Ar 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 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 white solid. MS (M+1): 399.2; 1H NMR (δ, CDCl3): 9.63-9.64 (m, 1H), 9.23 (dd, 1H), 7.84 (dd, 1H), 3.90 (s, 2H), 3.62 (td, 4H), 3.45 (s, 2H), 3.00 (s, 4H), 2.64-2.74 (m, 1H), 2.29 (t, 4H), 1.64-2.06 (m, 6H).

Workup

  1. customis degassed by Ar
  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-3ab5a6f2906844f1acd0b80e8b705bf8
Source dataset
uspto-grants-2010_09
Patent number
US07795262B2

Reaction notes

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