马来酸酐 、
hexacyclo<10.2.1.02,11.04,9.04,14.09,13>pentadeca-5,7-diene-3,10-dione 以
苯 为溶剂,
反应 24.0h,
以0.73 g的产率得到(2R,2aS,2a1S,4R,4aR,4bS,5R,5aS,8aR,9S,9aR,13S)-2,2a,2a1,3,4,4a,5,5a,8a,9-decahydro-1H,6H,8H-2,4,4b-(epiethane[1,1,2]triyl)-5,9-ethenopentaleno[1',6':3,4,1]cyclobuta[1,2-f]isobenzofuran-1,6,8,12-tetraone