The ketene thioacetal group as a cationi
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A.Richard Chamberlin; John Y.L. Chung
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Article
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1982
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Elsevier Science
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French
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The pyrrolizidines are a group of alkaloids which exhibit an incredible range of biological activity, including antitumor, hypotensive, local anesthetic, anti-spasmotic, anti-inflammatory, carcinogenic, and (especially) hepatotoxic action. 1,2 Syntheses of the deceptively simple aza-[3.3.0]octane ri