1-BENZYL-OCTAHYDRO-PYRROLO[3,4-B]PYRROLE Chemical Properties

Boiling point:

304.4±17.0 °C(Predicted)

Density 

1.074±0.06 g/cm3(Predicted)

storage temp. 

under inert gas (nitrogen or Argon) at 2–8 °C

pka

10.80±0.20(Predicted)

1-BENZYL-OCTAHYDRO-PYRROLO[3,4-B]PYRROLE Usage And Synthesis

Uses

1-Benzyloctahydropyrrolo[3,4-b]pyrrole is used in the synthesis of intermediates as quinolone anti-bacterials.

Synthesis

General procedure for the synthesis of 1-benzyl octahydropyrrolo[3,4-B]pyrrole-5(1H)-carboxylic acid from ethyl 1-benzylhexahydropyrrolo[3,4-B]pyrrole: Ethyl 1-benzyl octahydropyrrolo[2,3-c]pyrrole-5-carboxylate (2.1 g, 7.65 mmol) was dissolved in 37% hydrochloric acid (11 mL), and the reaction was heated and refluxed for 24 hours. Upon completion of the reaction, the pH of the reaction solution was adjusted to 8 with sodium carbonate, followed by multiple extractions of the product with dichloromethane. The organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure to afford 1.4 g of 1-benzyl octahydropyrrolo[3,4-B]pyrrole (90% yield) as a brown oil, which could be used for the next reaction without further purification. Mass spectral analysis (m/z): 203.2 [MH]+.

References

[1] Patent: WO2017/21920, 2017, A1. Location in patent: Paragraph 0633; 0634
[2] Patent: US5071999, 1991, A

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