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HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
HRID 12972Erstellt: 24. Oktober 2026

Piperazine → (3aR,6aR)-5-Methyl-1-(4-piperazin-1-yl-phenyl)-octahydro-pyrrolo[3,4-b]pyrrole

https://huagongshe.com/de/reaction/12972

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
EduktPiperazineHCID 4837—
EduktBinap, (A+-)-HCID 634876—
EduktSodium t-butoxideHCID 23676156—
Edukt(3aR,6aR)-1-(4-Bromophenyl)-5-methyloctahydropyrrolo[3,4-b]pyrroleHCID 44221503—
KatalysatorBis(dibenzylideneacetone)palladiumHCID 9811564—
LösungsmittelWaterHCID 962—
LösungsmittelTolueneHCID 1140—
Produkt(3aR,6aR)-5-Methyl-1-(4-piperazin-1-yl-phenyl)-octahydro-pyrrolo[3,4-b]pyrroleHCID 68497954—

Reaktionsbedingungen

Temperatur140 °C

Reaktionsschritte

The product of Example 72B (200 mg, 0.71 mmole), piperazine (200 mg, 2.33 mmole), tris(dibenzylideneacetone)dipalladium (20 mg, 0.022 mmole), (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (28 mg, 0.045 mmole), sodium tert-butoxide (140 mg, 1.46 mmole) and 7 ml of toluene were mixed under N2 in a Emrys process vial. The vial was sealed heated in the microwave for 15 minutes at 140° C. using the Emrys Creator. The mixture was diluted with water and extracted with dichloromethane (4×). The combined organic layers were washed with brine, dried over sodium sulfate, filtered, and concentrated under reduced pressure to give the crude product which was purified by column chromatography (10% methanol and 1% ammonium hydroxide in dichloromethane) to provide the title compound. 1H NMR (300 MHz, CDCl3) δ ppm 6.84-6.94 (m, 2H) 6.53-6.60 (m, 2H) 4.00-4.07 (m, 1H) 3.44-3.51(m, 1H) 3.11-3.20 (m, 1H) 2.99-3.09 (m, 9H) 2.88-2.96 (m, 1H) 2.68 (dd, J=9.66, 2.54 Hz, 1H) 2.48-2.59 (m, 2H), 2.31(s, 3H) 2.09-2.19 (m, 1H) 1.89 (m, 1H). MS-(M+H)+=287.

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS07728031B2
Quelldatensatzuspto-grants-2010_06
ORD IDord-5096d94f2d7c4e03973ee5d92679950c
Quellennotizuspto-grants-2010_06