Two Novel Thermal Biradical Cyclizations
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Michael Schmittel; Jens-Peter Steffen; Miguel ร. Wencesla รngel; Bernd Engels; C
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Article
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1998
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John Wiley and Sons
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English
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Both benzocarbazoles and quinolines can be synthesized from enyne ketenimines 1 generated in situ via biradical intermediates (see reaction below). Which of the heterocyclic ring systems is formed depends on the choice of the substituent R at the alkyne terminus.