Potassium Phosphate, Tribasic → Methyl 4-(3-amino-1,2,4-triazin-6-yl)-2-chlorobenzoate

HRID 452032

Reaktionsgleichung

Reaktionsgleichung von HRID 452032
Br[C:2]1[N:7]=[N:6][C:5]([NH2:8])=[N:4][CH:3]=1.[Cl:9][C:10]1[CH:11]=[C:12](B(O)O)[CH:13]=[CH:14][C:15]=1[C:16]([O:18][CH3:19])=[O:17].P([O-])([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O.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>[NH2:8][C:5]1[N:6]=[N:7][C:2]([C:12]2[CH:13]=[CH:14][C:15]([C:16]([O:18][CH3:19])=[O:17])=[C:10]([Cl:9])[CH:11]=2)=[CH:3][N:4]=1

Komponenten

7

Edukt 3

HCID 62657Potassium Phosphate, TribasicHCID 153325646-Bromo-1,2,4-triazin-3-amineHCID 230053353-Chloro-4-(methoxycarbonyl)benzeneboronic acid

Produkt 1

HCID 57516524Methyl 4-(3-amino-1,2,4-triazin-6-yl)-2-chlorobenzoateAusbeute 55,7 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittelHCID 312751,4-DioxaneLösungsmittel

Reaktionsbedingungen

Temperatur
82 °C

Versuchsvorschrift

To a mixture of 6-bromo-1,2,4-triazin-3-amine (Step 1, 1.0 g, 5.7 mmol) and [3-chloro-4-(methoxycarbonyl)phenyl]boronic acid (1.5 g, 6.8 mmol) (VMR, Cat. #100013-404) in 1,4-dioxane (22 mL) was added a solution of potassium phosphate (2.4 g, 11 mmol) in water (5.1 mL). The mixture was degassed by purging nitrogen for 10 min. To the mixture was added tetrakis(triphenylphosphine)palladium(0) (0.20 g, 0.17 mmol) and again was degassed with nitrogen. The mixture was stirred and heated at 82° C. (an oil bath) for 1 h. The mixture was cooled to r.t., diluted with water, stirred for 30 min, and a grey solid formed. The solid was isolated by filtration, rinsed several times with water, and dried in air. The solid was then triturated sequentially with hexanes, dichloromethane-hexanes (1:1), and hexanes to afford the desired product (840 mg, 55.54%). LCMS (M+H)+: m/z=264.9/267.0.

Aufarbeitung

  1. customThe mixture was degassed
  2. customby purging nitrogen for 10 min
  3. customagain was degassed with nitrogen
  4. temperatureThe mixture was cooled to r.t.
  5. additiondiluted with water
  6. stirringstirred for 30 min
  7. customa grey solid formed
  8. customThe solid was isolated by filtration
  9. washrinsed several times with water
  10. customdried in air
  11. customThe solid was then triturated sequentially with hexanes, dichloromethane-hexanes (1:1), and hexanes

Quellen und Nachweise

ORD-Eintrag
ord-89edc7b3b08c46acb48b7bfa97a9e51a
Quelldatensatz
uspto-grants-2013_07
Patentnummer
US08487096B2

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