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Title: Synthesis of spiro-annulated cyclobutane derivatives through ketene [2+2] cycloaddition and ring-rearrangement metathesis
Authors: Kotha, Sambasivarao
Pulletikurti, Sunil
Keywords: Cyclobutane;Spirocyclic;Ketene addition;Metathesis;Dechlorination
Issue Date: Dec-2020
Publisher: NISCAIR-CSIR, India
Abstract: Herein is reported a concise synthesis of spiro-annulated cyclobutane tetracyclic and pentacyclic derivatives by ketene addition, and ring-rearrangement metathesis (RRM) as key steps, starting with commercially available norbornadiene and dicyclopentadiene. The tetracyclic spiro-derivative contains a [5/5/4] core unit, which is the key building block to angular triquinanes synthesis. Whereas, the pentacyclic spiro-derivative contains a basic core skeleton of presilphiperfolanes, and other sesquiterpenoids.
Page(s): 1875-1880
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.59B(12) December 2020]

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