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New intramolecular cyclization and rearrangement processes based on the radical aryl-aryl coupling of arylsubstituted 2-azetidinones

✍ Scribed by Benito Alcaide; Alberto Rodríguez-Vicente

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 259 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)01373-2

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✦ Synopsis

New polycycUc 2-azetidinones having fused or not biaryl units are easily prepared by the tin-mediated, intramolecular aryl-aryl radical cyclization of readily available arylsubstituted 2-azetidinones. The regioselectivity and efficiency of the process is determined both by the length of the linking chain through the I~-lactam nucleus and by the number and position of the substituents on the aromatic acceptor ring.

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