Insights into cascade and sequential one-pot pathways for reductive amination of aldehydes paired with bio-derived levulinic acid to <i>N</i>-substituted pyrrolidones using molecular hydrogen

Gokhale, Tejas A.; Raut, Amol B.; Chawla, Sheetal K; Bhanage, Bhalchandra M.

doi:10.1039/d1re00384d

Cited by 5 publications

(2 citation statements)

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“…Although the oil industry provides abundant carbonyl substrates, aiming to improve sustainability of amine production recent attention has shifted to bio‐based substrates [33–36] . Furfural and benzaldehyde have been of particular interest in recent literature.…”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31][32] Although the oil industry provides abundant carbonyl substrates, aiming to improve sustainability of amine production recent attention has shifted to bio-based substrates. [33][34][35][36] Furfural and benzaldehyde have been of particular interest in recent literature. In 2016, Chatterjee et al reported the conversion of furfural to furfurylamine under mild conditions (80 °C, 20 bars of H 2 for 2 h) using aqueous ammonia.…”

Section: Introductionmentioning

confidence: 99%

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Microwave‐Assisted Reductive Amination of Aldehydes and Ketones Over Rhodium‐Based Heterogeneous Catalysts

et al. 2023

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Microwave (MW)‐assisted reductive aminations of aldehydes and ketones were carried out in the presence of commercial and homemade heterogeneous Rh‐based catalysts. Ultrasound (US) was used to improve dispersion and stability of metal nanoparticles, while commercial activated carbon and carbon nanofibers were used as supports. Moreover, various bio‐derived molecules were selected as substrates, and aqueous ammonia was used as a cheap and non‐toxic reagent. MW combined with heterogeneous Rh catalysts gave a 98.2 % yield in benzylamine at 80 °C with 10 bar H2 for 1 h; and a 43.3 % yield in phenylethylamine at 80 °C and 5 bar H2 for 2 h. Carbon nanofibers proved to be a better support for the metal active phase than simple activated carbon, since a limited yield in benzylamine (10.6 %) but a high selectivity for the reductive amination of ketones was obtained. Thus, raspberry ketone was converted to raspberry amine in a 63.0 % yield.

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Section: Introductionmentioning

confidence: 99%