A simple construction of the iceane skeleton via an intramolecular Diels–Alder reaction
Abstract
Annelation of 11,11-dichloro- and 11,11- dibromo-tricyclo[4.4.1.01,6] undeca-3,8-diene (6) with tetrachlorothiophen 1,1-dioxide is followed by an intramolecular Diels–Alder reaction to produce the hexacyclo [7.4.1.1.6,110.2,70.5,130.9,11] pentadec-3-ene system (9) which has the iceane skeleton contained within it.