TY - JOUR A1 - Kotha, Sambasivarao A1 - Gunta, Rama T1 - Design and synthesis of polycyclic sulfones via Diels–Alder reaction and ring-rearrangement metathesis as key steps JF - Beilstein Journal of Organic Chemistry PY - 2015/// VL - 11 SP - 1373 EP - 1378 SN - 1860-5397 DO - 10.3762/bjoc.11.148 PB - Beilstein-Institut JA - Beilstein J. Org. Chem. UR - https://doi.org/10.3762/bjoc.11.148 KW - alkenylation KW - Diels–Alder reaction KW - ring-rearrangement metathesis KW - sulfones N2 - 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. ER -