Sodium Carbonate → 6-(4-Methoxy-phenyl)-2-(6-methoxy-pyridin-3-yl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene

HRID 532666Notes

Reaction equation

HRID 532666 reaction equation
Br[C:2]1[S:3][C:4]2[CH2:5][C:6]3[C:12]([C:13]4[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=4)=[N:11][N:10]([CH2:21][O:22][CH2:23][CH2:24][Si:25]([CH3:28])([CH3:27])[CH3:26])[C:7]=3[C:8]=2[CH:9]=1.CC1(C)C(C)(C)OB([C:37]2[CH:38]=[CH:39][C:40](N)=[N:41][CH:42]=2)O1.[C:45]([O-])([O-])=[O:46].[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:20][O:19][C:16]1[CH:17]=[CH:18][C:13]([C:12]2[C:6]3[CH2:5][C:4]4[S:3][C:2]([C:37]5[CH:42]=[N:41][C:40]([O:46][CH3:45])=[CH:39][CH:38]=5)=[CH:9][C:8]=4[C:7]=3[N:10]([CH2:21][O:22][CH2:23][CH2:24][Si:25]([CH3:27])([CH3:26])[CH3:28])[N:11]=2)=[CH:14][CH:15]=1

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27565555-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amineHCID 866992302-Bromo-6-(4-methoxy-phenyl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene

Product 1

HCID 866992416-(4-Methoxy-phenyl)-2-(6-methoxy-pyridin-3-yl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentaleneYield 60%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 21863594Toluene ethanolSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of the corresponding 2-Bromo-6-(4-methoxy-phenyl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene (0.5 g, 0.1 mmol), 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyridin-2-ylamine (0.4 g, 1.7 mmol), Na2CO3 (2 M, 2.7 mL), and Pd(PPh3)2Cl2 (100 mg, 0.09 mmol) in toluene/ethanol (1:1, 10 mL) was heated at 100° C. for 8 hr. The solution was cooled to room temperature and extracted with ethyl acetate. The target product was purified by gravity column chromatography (20% EtOAc in hexane) to give 6-(4-Methoxy-phenyl)-2-(6-methoxy-pyridin-3-yl)-4-(2-trimethylsilanyl-ethoxymethyl)-4,7-dihydro-1-thia-4,5-diaza-cyclopenta[a]pentalene as orange solid in 60% yield.

Workup

  1. temperatureThe solution was cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. customThe target product was purified by gravity column chromatography (20% EtOAc in hexane)

Sources & evidence

ORD record
ord-0c274b48883b46fc8fefebb04902d0c1
Source dataset
uspto-grants-2014_10
Patent number
US08853207B2

Reaction notes

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