Økt mestringstro og motivasjon hos masterstudenter

Det finnes i dag mange studier for oppfølging og veiledning av ph.d.-studenter, men tilsvarende få for master-gradsstudenter, til tross for at den store majoriteten av studenter avslutter utdanningen med nettopp mastergraden.Kartlegging viste at mange studenter er usikre på sin egen rolle i arbeidet med masteroppgaven. I tillegg har mangelav motivasjon og mestringstro. Vi har sett på hvordan veiledning og rammer kan gjøres bedre med små og enkle grep,blant annet ved å oppmuntre studentene til å jobbe med laboratoriearbeid, teori og skriving parallelt. De viktigstetiltakene som ble gjennomført, er aktiv bruk av læringsplattformen, bedre opplæring innen litteratursøk og merøvelse i muntlig og skriftlig formidling. Resultatene viser at studentene ble mer drevet av indre motivasjon, følermer eierskap og har økt mestringstro etter at tiltakene ble innført.publishedVersio

Cu (II)-Catalyzed Asymmetric Henry Reaction with a Novel C1-Symmetric Aminopinane-Derived Ligand

A novel C1-symmetric dinitrogen ligand was synthesized in high yield from commercially available (1R,2R,3R,5S)-(−)-isopinocampheylamine and 1-methyl-2- imidazolecarboxaldehyde. In combination with Cu(OAc)2∙H2O, this new ligand promote the reaction between nitromethane and aliphatic aldehydes with high yields (up to 97%) and moderate enantioselectivities (up to 67% ee). The reactions with benzaldehyde required prolonged reaction time that resulted in diminished yields, but accompanied with ee-values in the 55%–76% range

The Alkyne Zipper Reaction: A Useful Tool in Synthetic Chemistry

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Hvordan kan man best nå ut til både motiverte og umotiverte studenter på grunnkurs i kjemi?

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Hvordan kan man best nå ut til både motiverte og umotiverte studenter på grunnkurs i kjemi?

publishedVersio

Characterization of Pseudo-Lignin from Steam Exploded Birch

There is a growing interest in a more wholesome utilization of biomass as the need for greener chemistry and non-mineral oil-based products increases. Lignin is the largest renewable resource for aromatic chemicals, which is found in all types of lignocellulosic biomass. Steam-explosion of lignocellulosic biomass is a useful pretreatment technique to make the polymeric material more available for processing. However, this heat-based pretreatment is known to result in the formation of pseudo-lignin, a lignin-like polymer made from carbohydrate degradation products. In this work, we have analyzed steam-exploded birch with a varying severity factor (3.1−5.0) by pyrolysis−gas chromatography−mass spectrometry, 2D-NMR, and Fourier transform infrared spectroscopy. The main results reveal a consumption of acetic acid at higher temperatures, with the increase of furan components in the pyrolyzate. The IR and NMR spectral data support these results, and there is a reason to believe that the conditions for humin formation are accomplished under steam explosion. Pseudo-lignin seems to be a humin-like compound.Characterization of Pseudo-Lignin from Steam Exploded BirchpublishedVersio

Two-Phase Dibromocyclopropanation of Unsaturated Alcohols Using Flow Chemistry

Dibromocyclopropanations are conventionally done by addition of dibromocarbene to alkenes under phase-transfer conditions in batch reactions using a strong base (50% NaOH (aq)), vigorous stirring and long reaction times. We have shown that cyclopropanation of unsaturated alcohols can be done under ambient conditions using continuous flow chemistry with 40% (w/w) NaOH (aq) as the base. The reactions were generally rapid; the yields were comparable to yields reported in the literature for the conventional batch reactionpublishedVersio

Two-phase dibromocyclopropanation of unsaturated alcohols using flow chemistry

Dibromocyclopropanations are conventionally done by addition of dibromocarbene to alkenes under phase-transfer conditions in batch reactions using a strong base (50% NaOH (aq)), vigorous stirring and long reaction times. We have shown that cyclopropanation of unsaturated alcohols can be done under ambient conditions using continuous flow chemistry with 40% (w/w) NaOH (aq) as the base. The reactions were generally rapid; the yields were comparable to yields reported in the literature for the conventional batch reactio

Two-phase dibromocyclopropanation of unsaturated alcohols using flow chemistry

Dibromocyclopropanations are conventionally done by addition of dibromocarbene to alkenes under phase-transfer conditions in batch reactions using a strong base (50% NaOH (aq)), vigorous stirring and long reaction times. We have shown that cyclopropanation of unsaturated alcohols can be done under ambient conditions using continuous flow chemistry with 40% (w/w) NaOH (aq) as the base. The reactions were generally rapid; the yields were comparable to yields reported in the literature for the conventional batch reactio