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Tributyltin Chloride → HCID 71279793, compound

HRID 246674
Notes
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Reaction equation

HRID 246674 reaction equation
I[C:2]1[C:10]2[C:5](=[CH:6][C:7]([CH3:11])=[CH:8][CH:9]=2)[N:4]([CH2:12][CH2:13][N:14]([CH3:16])[CH3:15])[N:3]=1.C([Mg]Cl)(C)C.[CH2:22]([Sn:26]([CH2:32][CH2:33][CH2:34][CH3:35])([CH2:28][CH2:29][CH2:30][CH3:31])Cl)[CH2:23][CH2:24][CH3:25]>C1COCC1>[CH3:15][N:14]([CH3:16])[CH2:13][CH2:12][N:4]1[C:5]2[C:10](=[CH:9][CH:8]=[C:7]([CH3:11])[CH:6]=2)[C:2]([Sn:26]([CH2:28][CH2:29][CH2:30][CH3:31])([CH2:32][CH2:33][CH2:34][CH3:35])[CH2:22][CH2:23][CH2:24][CH3:25])=[N:3]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 15096Tributyltin ChlorideHCID 712800902-(3-iodo-6-methyl-1H-indazol-1-yl)-N,N-dimethylethanamineHCID 178418918HCID 178418918, compound

Product 1

HCID 71279793HCID 71279793, compoundYield 203.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
-20 °C

Procedure

A solution of 2-(3-iodo-6-methyl-1H-indazol-1-yl)-N,N-dimethylethanamine (450 mg, 1.4 mmol) in 20 mL of dry THF was cooled to −20° C. under nitrogen atmosphere, isopropylmagnesium chloride (1.4 mL, 2.8 mmol, 2 M in THF) was added and stirred for 15 min at −20° C. Then tributylchlorostannane (0.8 mL, 2.8 mmol) was added and allowed to warm to room temperature. The reaction was cooled in an ice bath and quenched with saturated ammonium chloride solution, extracted with ethyl acetate (3×30 mL), combined organics dried with sodium sulfate and concentrated to give 1.4 g of crude N,N-dimethyl-2-(6-methyl-3-(tributylstannyl)-1H-indazol-1-yl)ethanamine as an oil which was used in the next step directly without further purification.

Workup

  1. temperatureto warm to room temperature
  2. temperatureThe reaction was cooled in an ice bath
  3. customquenched with saturated ammonium chloride solution
  4. extractionextracted with ethyl acetate (3×30 mL)
  5. dry with materialcombined organics dried with sodium sulfate
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-af4a7b4b14fd40ad907a0249cb0794a1
Source dataset
uspto-grants-2014_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08658646B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes