Iron(III) catalyzed direct synthesis of cis-2,7-disubstituted oxepanes. The shortest total synthesis of (+)-isolaurepan.

Org Lett

Instituto Universitario de Bio-Orgánica Antonio González, Departamento de Química Orgánica, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Tenerife, Spain.

Published: December 2012

AI Article Synopsis

  • Prins cyclization using iron(III) salts effectively transforms bis-homoallylic alcohols and aldehydes into 2,7-disubstituted oxepanes with high cis selectivity and yields.
  • This reaction can occur even with unactivated olefins, showcasing its versatility.
  • Moreover, this method was pivotal in achieving the shortest total synthesis of (+)-isolaurepan.

Article Abstract

Prins cyclization of bis-homoallylic alcohols with aldehydes catalyzed by iron(III) salts shows excellent cis selectivity and yields to form 2,7-disubstituted oxepanes. The iron(III) is able to catalyze this process with unactivated olefins. This cyclization was used as the key step in the shortest total synthesis of (+)-isolaurepan.

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Source
http://dx.doi.org/10.1021/ol3028016DOI Listing

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