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A novel organocatalytic highly enantioselective nitrocyclopropanation reaction of α,β-unsaturated aldehydes is presented. The 1-nitro-2-formylcyclopropane derivatives synthesized from this catalytic transformation were converted to the corresponding β-nitromethyl-acid esters, which are excellent precursors of GABA analogues such as Baclofen, by subsequent organocatalytic chemoselective ring-opening.
Szadek – a town fulfilling in the past important administrative and socio-economic functions – is found on almost all maps of old Poland’s territory. Therefore plentiful archival material is kept in the Central Archive of Old Documents in Warsaw and Public Records Office in Łódź. It allows various studies on the history of Szadek and its inhabitants to be conducted, but the town’s spatial structure...
W szadkowskich zapiskach radzieckich i wójtowsko-ławniczych znajdują się 42 akty ostatniej woli (z lat 1446–1502), co jest znaczącą liczbą, m.in. w porównaniu z sąsiednimi miastami. W artykule wykorzystane zostały również informacje o czterech pojedynczych legatach pobożnych, nie mających charakteru testamentów, ale pokazujących istotne rysy pobożności mieszczańskiej. W sumie analizowany materiał...
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