2a-Morpholin-4-yl-2a,2b,3,9b,10,10a-hexahydro-cyclobuta[4,5]pentaleno[2,1-a]azulene-1,2-dicarboxylic acid dimethyl ester 以
xylene 为溶剂,
反应 12.0h,
以90%的产率得到dimethyl 7-morpholin-4-yltetracyclo[8.8.0.02,8.011,17]octadeca-1(18),4,6,10,12,14,16-heptaene-5,6-dicarboxylate