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Formation of 1,3-oxaselenoles via Pummerer reaction in selenium dioxide oxidation of cyclic 1,2- and 1,3-diketones, and the preparation of 1,5,5-trimethyl-7-selenabicyclo [2.2.1] heptane-2,3-dione

✍ Scribed by Laitalainen, Tarja; Simonen, Tapio; Kivek�s, Raikko; Klinga, Martti


Book ID
120024860
Publisher
Royal Society of Chemistry
Year
1983
Weight
911 KB
Volume
0
Category
Article
ISSN
1472-7781

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✍ Schick, Hans ;Roatsch, Birgit ;Schwarz, Hartmut ;Hauser, André ;Schwarz, Sigfrid 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 453 KB 👁 1 views

## Abstract In contrast to earlier reported unsuccessful experiments the Michael addition of prop‐2‐enal to 2‐methylcyclopentane‐1,3‐dione (1) affords 3‐(1‐methyl‐2,5‐dioxocyclopentyl)propanal (3) in 90% yield, if the reaction is carried out in water without a basic catalyst. This aldehyde is conve