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Total Synthesis of (±)-Crinane from 6,6-Dibromobicyclo[3.1.0]hexane Using a 5- exo- trig Radical Cyclization Reaction to Assemble the C3a-Arylated Perhydroindole Substructure

Lan, Ping; Banwell, Martin; Willis, Anthony


Crinane embodies the tetracyclic framework associated with some of the most common Amaryllidaceae alkaloids. It has now been prepared in 10 steps from 6,6-dibromobicyclo[3.1.0]hexane (2). The initial step involves the thermally induced electrocyclic ring opening of cyclopropane 3 and capture of the resulting π-allyl cation with benzylamine to give an allylic amine that is readily elaborated to the 3°-amine 10. This last compound was engaged in a 5-exo-trig free radical cyclization reaction to...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Journal of Organic Chemistry
DOI: 10.1021/acs.joc.8b01088
Access Rights: Open Access


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