title: Design and synthesis of polycyclic sulfones via Diels-Alder reaction and ring-rearrangement metathesis as key steps.
abstract: Here, we describe a new and simple synthetic strategy to various polycyclic sulfones via Diels-Alder reaction and ring-rearrangement metathesis (RRM) as the key steps. This approach delivers tri- and tetracyclic sulfones with six (n = 1), seven (n = 2) or eight-membered (n = 3) fused-ring systems containing trans-ring junctions unlike the conventional all cis-ring junctions generally obtained during the RRM sequence. Interestingly the starting materials used are simple and commercially available.
authors.affiliation: Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India.
authors.forename: Sambasivarao
authors.initials: S
authors.lastname: Kotha
authors.affiliation: Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai-400 076, India.
authors.forename: Rama
authors.initials: R
authors.lastname: Gunta
keywords: Diels–Alder reaction; alkenylation; ring-rearrangement metathesis; sulfones