OPEN Repository

Welcome to OPEN - the Repository of Open Scientific Publications, run by the Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, previously operating as the CeON Repository. The Repository enables Polish researchers from all fields to openly share their articles, books, conference materials, reports, doctoral theses, and other scientific texts.

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22936 archived items

Recent Submissions

Item
Propargylation of CoQ0 through the Redox Chain Reaction
(American Chemical Society, 2022-01) Pawlowski, Robert; Stodulski, Maciej; Mlynarski, Jacek; Institute of Organic Chemistry, Polish Academy of Sciences
An efficient catalytic propargylation of CoQ0 is described by employing the cooperative effect of Sc(OTf)3 and Hantzsch ester. It is suggested to work through the redox chain reaction, which involves hydroquinone and dimeric propargylic moiety intermediates. A broad range of propargylic alcohols can be converted into the appropriate derivatives of CoQ0 containing triple bonds in good to excellent yields. The mechanism of the given transformation is also discussed.
Item
Bioinspired Cobalt-Catalysis Enables Generation of Nucleophilic Radicals from Oxetanes
(American Chemical Society, 2022-03-25) Potrząsaj, Aleksandra; Ociepa, Michał; Chaładaj, Wojciech; Gryko, Dorota; Institute of Organic Chemistry, Polish Academy of Sciences
Oxetanes are valuable building blocks due to their well-explored propensity to undergo ring-opening reactions with nucleophiles. However, their application as precursors of radical species is still elusive. Herein, we present a bioinspired cobalt catalysis-based strategy to access unprecedented modes of radical reactivity via oxetane ring-opening. This powerful approach gives access to nucleophilic radicals that engage in reactions with SOMOphiles and low-valent transition metals. Importantly, the regioselectivity of these processes complements known methodologies.