马来酸酐 、
(3RS,4aSR,4bRS,10bRS)-5-Methoxy-8-vinyl-2,3-dihydro-1H-3,4b-methanocyclopropa[1,2:1,3]dibenzen-4(4aH)-one 以
苯 为溶剂,
反应 4.0h,
以79%的产率得到(3RS,4aSR,4bRS,6aSR,7RS,8RS,10bRS)-5-Methoxy-2,3,6a,7,8,9-hexahydro-1H-3,4b-methanobenzeno[1,2]cyclopropa[1,2-a]naphthalen-4(4aH)-one-7,8-dicarboxylic anhydride