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Phosphonium-stibonium and bis-stibonium cations as pnictogen-bonding catalysts for the transfer hydrogenation of quinolines

Dalton Transactions, ISSN: 1477-9234, Vol: 48, Issue: 20, Page: 6685-6689
2019
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Celebrating our Golden Authors: Prof. Gillian Reid

Prof. Gillian Reid and Dalton Transactions This year we are celebrating the 50th volume of Dalton Transactions by taking a look at some of our authors who have published over 50 articles in the journal. This week, we learn what Dalton Transactions means to Professor Gillian Reid, as our final Golden Author in our series. Our author at a glance: Prof. Gill Reid is based at the University of Southam

Article Description

Bifunctional Lewis acidic group 15 compounds have emerged as appealing platforms for anion sensing and organocatalysis. As part of our interest in the chemistry of these compounds, we have now compared the catalytic properties of [o-(MePPh)CHSbPh] ([3]), [o-(PPh)CHSbPh] ([4]), [o-(MePPh)CHSbPh] ([5]), and [o-CH(SbMePh)] ([6]) using the transfer hydrogenation of 2-phenyl-quinoline and 3-bromoquinoline with a Hantzsch ester benchmark reactions. This study, which also involved an evaluation of the catalytic properties of [PhSb] and [PhMeP], shows that antimony cations are generally more active than their phosphorus counterparts and neutral stiboranes. Our results also demonstrate that dicationic systems such as [6] are superior activators.

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